Suzaku goes down after Yusuke's sneak attack, but remains unharmed. Again Yusuke charges, this time with more intensity, but Suzaku still blocks all of his attacks, however Yusuke manages to sneak in and nails a punch, and Suzaku loses possession of the flute. Yusuke rushes to the flute but Suzaku uses his superior speed and gets the flute back and he is definitely furious.
Meanwhile, Botan and Keiko continue to run from the possessed people that are chasing them, and they are forced to fight when cornered. On the other hand, Kuwabara, Kurama and Hiei continue to fight off the zombies, but it seems like they are totally outnumbered as more and more of them continue to appear. Kuwabara decides to use his spirit sword to jump up the entrance Yusuke went in earlier but fell short and smashes his face into the stone wall. However, Hiei and Kurama pointed out to KUwabara that the entrance was now clear.
Suzaku then uses another one of his techniques - and he splits into seven more versions of himself. All of the seven clones fly off and unleash a lighting arrow attack. Yusuke manages to deflect the first six, but he got hit by the seventh which knocks him unconscious. Now Suzaku has the upper hand. Meanwhile, Botan and Keiko are once again trapped and they hurry into a room, but it is a dead end and they are forced to face the possessed people. But there are too many of them and they are in grave danger. Back at the demon's castle, the seven clones are beating up Yusuke, as Yusuke sees the situation in the Human World from Suzaku's wide screen. Seems like Botan and Keiko are hiding in a locker to avoid the possessed people. But Keiko's handkerchief got stuck in the locker and the possessed people see it and without hesitation, they smash the locker down
Yusuke sees this and thinks that Botan and Keiko are finally caught. He loses courage and Suzaku beats him up more with his electrifying attacks. Yusuke was about to give up when suddenly Genkai's voice kicks in Yusuke's mind, telling him Keiko and Botan are not done yet and we see that the two girls are still alive and they practically deceived the possessed people from believing that they were hiding inside the locker. They deliberately placed the handkerchief inside and they escape once more.
Now Yusuke realizes they are still alright and regains his composure. He starts building up his energy and releases a mighty blast that almost destroys the whole chamber to Suzaku's astonishment. Now the real battle is about to begin Suzaku releases another lightning fist attack, but Yusuke was up to the task as he himself unleashes his full power and he blasts Suzaku with his devastating spirit shotgun. Suzaku goes down and Yusuke has finally beaten him. However, he has used up his own strength and he goes down too.
Keiko and Botan continue to run from the possessed people that are chasing them when suddenly Botan gets whacked hard from a sneak attack and she passes out. Keiko goes to her aid, but now they are trapped and have nowhere to go. Yusuke sees this from Suzaku's wide screen and decides to grab the flute and destroy it. He doesn't have much strength so he crawls towards the flute when suddenly Suzaku's bird (the one that flies with Suzaku all the time who taunts Yusuke) knocks the flute far away. Yusuke threatens the bird with a rei gun pose, scaring her, and he goes again to grab the flute when suddenly Suzaku steps on his hand.
Suzaku grabs the spirit of the other Suzaku clones he earlier formed and with this he gains back his full strength, leaving Yusuke in real trouble. Suzaku charges up for another lighting fist attack, and Yusuke absorbs the full impact of it. However, he doesn't go down. Somehow he has some strength left, but Suzaku realizes this and sees he doesn't have enough to take another attack. He charges up again for another lighting fist, but Yusuke sees Keiko and Botan about to be assaulted by the possessed people and suddenly his eyeballs disappear and a burst of energy (what Suzaku calls his life energy) suddenly erupts from Yusuke and he unleashes a mighty Spirit Shotgun just in time for Kuwabara and the others to see. They arrive as Yusuke nails Suzaku with the immense energy and the force blows up the whole chamber.
The possessed people fall down and the flute is destroyed. Now Keiko, Botan and the whole human world is finally safe as Koenma (who was watching this whole time) rejoices. However, Yusuke is totally drained. Kurama checks him out and notices his heart slowly beating to the point he believes it will stop. In danger of losing a friend, Kuwabara decides to share his energy with him in order for him to live, as a confused Hiei looks on once they all recover enough to walk Yusuke instead of leaving right away decides to raid this place for information so feeling around he finds a secret door leading to a passage way that takes him to a treasure trove of books and scrolls he finds stuff on everything so he steals it puts it into a storage bag then destroys the place on their way out Hiei Kurama and Kuwabara are eyeing the bag with a gleam in their eyes.
Three days later, Yusuke wakes up somewhere and sees Kuwabara and Kurama. He realizes he is in Kuwabara's room and he has been sleeping for a number of days, seems like he did beat Suzaku after all. But then he remembers something and asks Kuwabara about Keiko and Botan. Kuwabara and Kurama get a depressed look making Yusuke think something went wrong with them, when suddenly the two girls burst out of the door and yell at Yusuke for breaking out of the bed. Kuwabara gets one hell of a laugh. Later, as Keiko leaves, Yusuke follows and apologizes for the things that just happened and it looks like Keiko will be replying with a deadly slap. But instead of a slap she points her finger at Yusuke telling him not to make her worry again, just to promise he will let her know when he has a case next time.
Later that day Yusuke meets with the others on his team where he used to train with Boton he brought the bag the forst thing he pulls out is a crystal ball Hiei walks up to it already knowing what it is Hiei explains that it's used to determine your element when using spirit energy so Hiei goes first he channels his energy and two orbs swirl together one on fire and one frozen this surprises Hiei but not entirely next is Kurama who gets the elements of earth and wind next is Kuwabara who gets the elements of lightning and water finally is Yusuke who gets the elements of fire wind and lightning Yusuke hands them stuff from the bag on energy control exercises how to increase their reserves how to control strength and speed properly even against humans and stuff for their elements from beginner all the way to where they are now in terms of experience and skill which is Saint Beast level.
Everyone thanks Yusuke for the training material and goes their separate ways they decide to go back to their old routine of doing what they were doing before for Kuwabara he instead decides to train his elements last and focus on everything else that Yusuke gave him while also going to school Yusuke does the same as does Kurama but Hiei trains in everything except for the ice element this routine goes on for about 4 months also during this time Kuwabara and Yusuke are doing cases for his detective agency but they do only one case per week they make sure not to take on anything that's going to be too lengthy or difficult in case Spirit World comes calling.
Yusuke is back to his class days. One early morning, he runs to school once again but suddenly he feels he is being tracked down by someone. Just then, he realizes Hiei is the one following him. Hiei gives him a video tape courtesy of Koenma, and it contains Yusuke's next mission as Hiei vanishes once again. Later at school, Yusuke asks Kuwabara if he can watch the tape at his place, and Kuwabara agrees on one condition - that he will never again be involved in any of Yusuke's missions. Keiko arrives and yells at Yusuke for bringing a tape at school. Yusuke was about to make another excuse but then he remembers the time when Keiko tells him not to hide anything from her again so he tells her the truth. The problem is, Keiko doesn't understand what he's saying.
Later, we get to see a cute altercation between Yusuke and Botan as Kuwabara readies his VCR to play the tape about Yusuke's next mission. Koenma appears and he elaborates all about Yusuke's next mission, where they have to rescue a girl named Yukina who is being held captive by a greedy old businessman named Tarukane in a mansion in the middle of a forest. Yukina has the capability to create rare pearls from her tears and these pearls cost millions, which is why Tarukane is forcing her all this time to cry for his business to bloom. All this time they didn't know that Shizuru, Kuwabara's older sister, is watching from behind. Kuwabara seems to have a crush on Yukina and runs off to prepare himself despite his earlier declaration of non-involvement in Yusuke's missions and he misses the part of the tape where Koenma explains that Yukina is Hiei's sister. Hiei knows it but Yukina is not aware of this.
Meanwhile, at Tarukane's mansion, we see Yukina cherishing the birds flying in the forest. Then we see Tarukane arriving and presents a person that will surely make Yukina cry and we see for the first time the Toguro Brothers. The Toguro brothers arrive at Yukina's chamber and Toguro tries to hurt her to make her cry. But as Tarukane has experienced, it does not work. Just then, the birds Yukina was cherishing earlier passed by, and Toguro realizes her weakness. He grabs the birds and kills them, causing Yukina to shed tears and the tears turn to pearls, much to Tarukane's delight.
Yusuke, Kuwabara, and Botan start their journey to the forest to save Yukina, led by Kuwabara, who is still infatuated after seeing Yukina. Tarukane realizes someone is invading their territory, so he dispatches one of his men. On their way, Yusuke and the gang meet one of Tarukane's men, Hirue, and it turns out that this person is a monster as he turns into a tentacle-like creature. Kuwabara slices the creature with his Spirit Sword and Yusuke finishes him off with a dash of his Spirit Gun as the gang defeats him and they continue on towards the mansion, ready to face any challenges Tarukane might send against them.
Tarukane learns that the monster he sent out was defeated by the outsiders as the Toguro brothers realize that they are not ordinary people while Yusuke and the gang make progress with their mission. Tarukane becomes a bit concerned but Toguro calms him saying he could face them if necessary. Tarukane doesn't quite agree and tries to test Toguro's skill by competing him against his own pet monster, who happens to be very powerful. However, it turns out that Toguro is very powerful after all, and he punches a hole right through the monster's body in just one attack thus killing it in a blink of an eye. Tarukane is surprised and finally gains some confidence. Then he thinks of something more interesting — a gambling game.
Koenma, with his servant Jorge Saotome, are watching Yusuke's journey towards Tarukane's mansion when suddenly Kurama arrives. Hiei is nowhere to be found after he delivered the tape to Yusuke. Kurama thinks that Hiei knows the contents of the tape and he himself is out to save his own sister. Hiei is then seen jumping from tree to tree with his hyperspeed towards Tarukane's mansion without Yusuke and the rest noticing. Later, Tarukane summons several of his business associates from the Black Black Club and decides to start a gambling game. He knows that the outsiders trying to invade his place have some kind of special powers. Toguro told Tarukane that these outsiders defeated powerful demons such as Rando and Suzaku, so he manipulates the gambling game to his advantage. His first bet is the twelve defenders versus the outsiders. As expected, the majority of his business associates went with his defenders, but there was one, Sakyo, who favored the outsiders and even doubled the wager. Tarukane is shocked, and he gets even more shocked when we see Yusuke and Kuwabara beating up his twelve defenders. Botan tries to look ahead and examine the location as Yusuke and Kuwabara beat up more defenders.
Tarukane then releases his second bet - three of his most powerful fighters: Miyuki, Gokumonki and Inmaki, against the outsiders. Everyone again went in favor of Tarukane's men — except Sakyo once again. He goes with Yusuke and even triples the wager, making Tarukane irate. So he thinks of a trick, and suddenly the whole forest blows off. Tarukane had seemingly initiated the self—destruct button and destroyed the forest that surrounded the mansion, seeming like he has gotten rid of the outsiders for good. But the outsiders are perfectly safe and they finally reach the mansion. They enter it and face their first challenge, one of Tarukane's fighters — Miyuki.
Miyuki confronts the gang and challenges them to a bout. Kuwabara takes it easy on her since he doesn't want to fight girls. But then, Yusuke steps front and accepts the challenge. Miyuki attacks, and so does Yusuke. Miyuki uses a rope and strangles Yusuke, but Yusuke uses this for his own advantage and he bounces up and nails Miyuki with a punch right on her chest. Kuwabara yells at Yusuke and tells him to take it easy since Miyuki is a girl. Miyuki continues to attack, but Yusuke fires back with a powerful roundhouse kick right into her chest again and sends her smashing to the wall. Kuwabara gets enraged at how Yusuke treats women (even though she's an enemy), but then Yusuke gropes Miyuki's chest and groin and reveals she is transgender. Kuwabara gets confused and he tries checking out Miyuki's private parts, but Botan hits him in the head for being so perverted.
They continue on as Koenma, and his servant Jorge Saotome, watch them from the Spirit World. Koenma eats some dumplings which gmakes Saotome envious. They make a wager on who will win, the winner receiving a royal treatment, like Koenma's. Back at Tarukane's mansion. Kuwabara suddenly pushes Yusuke away and barely avoids an attack by another enemy. It hits the band he tied in his head with the "I love Yukina" writing. It turns out another one of Tarukane's fighters has faced them: Inmaki. He has some cloaking skills and he manages to slash Yusuke's back with his wolverine-like claws. Since they can't see him because of his disguise, Yusuke tries to escape then runs into a corner. Just then, Kuwabara gives him the signal and Yusuke unleashes his spirit shotgun attack. It hits Inmaki and knocks him out. They deliberately tried to escape so that Inmaki followed them into an ambush. They continue on but Yusuke sees a scroll fall out of Inmaki's clothes he reads it and it tells how to move as he does how to disappear and how to move silently like he does the final technique is a combination between afterimages and illusions Yusuke pockets the scroll then Botan suddenly gets caught by another monster: Gokumonki, another one of Tarukane's fighters. He uses Botan as a human shield so Yusuke and Kuwabara can't use their attacks, but Botan manages to break out and the combined force of Yusuke and Kuwabara's flying kicks send Gokumonki flying.
Tarukane is getting more and more irate as Sakyo wins another bet. So he decides to place his final bet, which he thinks for sure he will win: the Toguro brothers versus the outsiders. Tarukane reckons that Toguro's strength willwin back all the money he lost during the previous bets but Sakyo makes a high-stakes bet: all his property in favor of the outsiders. Tarukane takes the risk and seals the deal. They go into a special battle room where Toguro will await the three, and at the same time Yukina is brought there to watch how her rescuers will fare after facing Toguro. Hiei, who has been jumping from tree to tree this whole time, finally reaches Tarukane's mansion, but then he feels an intense power from within, as does Koenma, and realizes that the power is coming from Toguro himself. Yusuke, Kuwabara and Botan arrive at the battle room and confronts their next opponent, Toguro.
Kuwabara finally sees the girl he wanted to rescue right from the start: Yukina. He and Yusuke have to first get past the Toguro brothers. Kuwabara seems to underestimate Toguro's strength and starts to charge, but Yusuke stops him saying he feels something powerful within him. This is proven true, as Elder Toguro changes his body into the form of a sword, and Younger Toguro starts to charge up, and the immense power Toguro displays blows Yusuke off his feet, and before they know it Toguro charges at them then knocks Yusuke out, and charges for Kuwabara. Kuwabara unleashes his Spirit Sword to try and block Toguro's sword, but it is too powerful and it blows him off and smashes him to the wall. Yusuke sneaks from the side and fires his Spirit Gun but Toguro was able to jump and avoid it, but Yusuke follows with his spirit shotgun attack and nails Toguro. However, he uses a barrier to protect him from Yusuke's attack and counters with a punch that sends Yusuke flying, making them feel like their powers are hopeless against a monster like him.
Yusuke thinks of a plan and charges for Toguro, but quickly sidesteps and fires a full-powered Spirit Gun right in front of Toguro's face. Despite this though, Toguro remains unharmed. It appears that Elder Toguro changed from sword to shield and blocked Yusuke's Spirit Gun. Toguro smashes Yusuke with a punch and he goes down. Now both he and Kuwabara are out and Tarukane is rejoicing, but Sakyo seems unaffected by this situation.
Somehow, with his spirit energy, Kuwabara feels what Yukina had gone through, the torture she experienced when she was being forced to cry by Tarukane for his own personal gains, the loss of her loved ones, and with this he gets his inspiration and gets re-energized. He unleashes his spirit sword and then charges for Tarukane. He wants to punish Tarukane for making Yukina suffer, but just then Toguro pulls him back and kicks him in the gut. However, Kuwabara thinks of a plan that if they could just land in a sneak attack they could win the battle, so he decides to ask for Yusuke's help. Once again, Kuwabara charges with his Spirit Sword, and Toguro is ready to anticipate the attack. However, Yusuke fires his Spirit Gun and it hits Kuwabara, doubling his speed with this force, surprising Toguro, who is unable to anticipate this sudden burst of speed as he gets stabbed hard by Kuwabara's Spirit Sword, knocking him down.
Tarukane is shocked by this sudden turn of events, and Sakyo is more than happy as ever as he gains Tarukane's property. Just then, Hiei suddenly bursts into Tarukane's place. He had taken out all of Tarukane's bodyguards and is ready to punish him for everything that he had done to Yukina. Tarukane pleads for survival, but Hiei starts giving Tarukane the beating of his life. As Hiei was about to land the final blow, Yukina stops him, saying she has seen too much violence and wants it to stop, and being her long lost twin brother, he stopped. However Yukina doesn't know him, and when she asked who he is, Hiei decided it wasn't the right time to tell her his real identity yet, so he told her that he was just a friend. Kurama also made it into the mansion, waiting to stop Hiei if need be.
Then Yukina suddenly remembered about Kuwabara so she hurried off and went to see him. She used some of her healing powers to heal his injuries. Then Kuwabara started to worry that Yukina might hate humans for all that she had experienced but she told him that she actually likes humans while this was going on Hiei Kurama and Yusuke catch up and instead of scolding Hiei he chuckles then tosses Inmaki's scroll to him Hiei quirks an eyebrow until he reads what it is and who's it was he smirks as he's always been one step behind the assassin from the Demon triad he pockets the scroll and Yusuke hands Kurama a book on illusions that he found in the Saint Beast library who happily accepts it Yusuke says Idk how that scroll works Hiei but this book will split into as many copies as you need and will upgrade to the level you're currently at in your studies as it's performance based at the end of each book there's a test if you pass you get another level if you fail you start over Hiei nods as does Kurama Yusuke says every book that I gave you is like that it will stop at a certain level though Idk what level that is.
Hiei says that's fine you don't need to worry about us you should worry about that oaf downstairs as he needs the most training Kurama sighs then says I hate to agree with Hiei but he does raise a valid point kuwabara should be 4 times stronger than he currently is now Yusuke sighs then says the problem is that he's trying to make his speed and strength high enough that he doesn't need to use energy Hiei scoffs then says even if he accomplishes that feat there will be enemies strong enough that will require him to use his powers Yusuke says I know this case being the perfect example so they all leave the compound not before yusuke tests Yukina's powers she has wind water healing barrier illusions and ice/snow powers Yusuke gives her material on how to train in all of it she hugs him he thanks him then leaves.