"This world's system is different from gourmet energy?" Don Slime became somewhat interested.
Setsuna explained, "This world's energy system is called Chakra. It involves mixing physical energy and mental energy in a 1:1 ratio to refine Chakra..."
"Wait a minute," Don Slime interrupted. "According to what you're saying, I don't even have a body. How can I refine Chakra?"
"That's true," Setsuna pondered. "In this world, there are beings called Tailed Beasts. Even after losing their bodies, they can still condense Chakra. While it might be because they are essentially aggregates of Chakra themselves, they do indeed undergo the process of refining Chakra."
He couldn't say for sure if all Tailed Beasts refined Chakra, but the Nine-Tails definitely did.
In the future, during Naruto's fight with Sasuke, Kurama helped Naruto refine Chakra.
After thinking for a moment, Setsuna said, "How about this: tomorrow I'll invite some friends over for a banquet at my house. One of them has a Tailed Beast named Kurama inside them. Pay attention then and see if you can observe how it refines Chakra."
After saying that, Setsuna added, "Observing the sealed space inside someone without affecting the person themselves... you can do that, right?"
Feeling doubted, Don Slime was very displeased and immediately shouted, "Who do you think I am? I'm a Cosmic Emperor! How could such a small thing possibly stump me?"
"Good," Setsuna nodded.
Don Slime then asked belatedly, "But why do you want me to learn Chakra? That energy called 'Ki' inside you seems to have much greater potential than Chakra, doesn't it?"
Setsuna sighed, "This brings us to the Genjutsu of this world. Ordinary Genjutsu can be broken by disrupting the flow of Chakra. But if the Genjutsu is cast through Dojutsu, then someone else must disrupt the Chakra Flow within your own body."
"I see. But that's entirely because your soul is too weak. If your soul is strong enough, no type of Genjutsu can control you," Don Slime evaluated.
"You're right," Setsuna nodded.
But he knew that training Ki didn't significantly enhance the soul. After all, powerful beings like Dabura, the Demon King, whose strength rivaled a Super Saiyan 2, could still have his mind controlled by magic.
While Dabura's inner evil thoughts played a part, if the mental gap hadn't been so vast, the mighty Demon King wouldn't have been controlled by a single wizard.
Of course, training Ki did involve mental training, but it wasn't specifically tailored for that purpose. He could only hope to find a universe later where he could train his soul.
…
The next day, Setsuna invited everyone to his home.
Besides his own team, he also invited Team Minato and the team with Asuma and Kurenai.
The main part of Setsuna's house wasn't large, but the backyard was quite spacious.
After all, it was on the outskirts of Konoha, an area with more land and fewer people.
The main structure cost money to build, so it was small, but the attached garden was different. He just put up a fence, and the enclosed area counted as his home.
Everyone followed Setsuna to the backyard, feeling puzzled. The environment was nice, but aside from tables and chairs, they didn't see any utensils needed for a banquet.
Minato didn't ask much, just smiled gently, "Shall we help out?"
Just as everyone was about to start, Setsuna quickly reassured them, "Don't worry, everyone. Please wait a moment. I'll bring out the prepared food soon."
Setsuna went back inside, and everyone looked around the environment somewhat idly.
Suddenly, an incredibly rich aroma wafted from the house.
Obito closed his eyes, fantasizing, drool practically flowing. "What's that smell? So fragrant!"
Asuma was shocked. "This smell is countless times more fragrant than the feasts made by the chef at my house!"
Everyone present kept glancing in the direction the fragrance came from, their attention completely captured by their cravings, unable to look away.
Fortunately, Setsuna soon came out carrying a tray laden with hamburgers. He placed them on the table and said with a smile, "Everyone, please start eating. I'll go bring out the other dishes."
Kushina exclaimed in amazement, "There's more delicious food?"
"Of course," Setsuna then successively brought out curry dishes, Shining Donburi, and other dishes made by various high-level chefs using the Four Beast's meat.
Thanks to the complete isolation of the dimensional space inside Titan, not even the tiniest bacteria could enter, so there was no worry about the food spoiling.
Although reheating slightly affected the taste, for everyone who had never eaten such delicacies before, this minor flaw was completely negligible.
Seeing that everyone insisted on waiting for him to sit down before starting, Setsuna had to set an example. After sitting down and picking up a bowl of Shining Donburi, he said, "Alright, everyone, let's eat."
Obito cheered, eagerly grabbing the hamburger closest to him and taking a bite. Instantly, tears streamed down his face, and he waved his arms, shouting, "This is the taste of happiness!"
'Is it really that exaggerated?' Those who hadn't started eating yet thought.
But when they tasted the food, they instantly felt Obito might have been somewhat restrained. This indescribable deliciousness truly could only be expressed through exaggerated body language.
While eating his Shining Donburi, Setsuna asked in his mind, "So? Can you sense the Nine-Tails?"
"Relax, I already see the little fox you mentioned. Huh..."
"Huh? What's wrong?"
Don Slime replied, "The seal you mentioned... it seems that little fox has almost dug through it."
"Oh? Trying to break out?" Setsuna asked. "Can you teach it a lesson?"
"No problem. Normally, I can't leave the Gourmet Cells for too long, but you just fed this woman some gourmet food, so I can absorb some gourmet energy from her." Don Slime chuckled sinisterly.
Inside Kushina's seal space, a giant orange fox was bored, counting its tails and muttering to itself, "Hmph, this Kushina has been too lax lately. She actually dared to come to the edge of Konoha's barrier. If she goes just a bit further, I can try to completely tear the seal. But I can't be hasty now, I mustn't let Kushina notice."
At that moment, a cute, black, jelly-like creature appeared in front of the prison bars.
Kurama naturally noticed this strange creature. "What is this thing?"
"My name is Don Slime. I'm here to study you," Don Slime said very frankly.
"Study me?" Kurama couldn't help but start growling. That word made it feel offended, reminding it of some unpleasant memories.
"You're looking for death!" One of Kurama's front paws shot through the gaps in the cage, grabbing Don Slime.
But the next moment, Kurama was horrified to find its front paw had disappeared. The black monster smacked its lips, looking at it with a weird gleam in its eyes. "It's actually a top-tier ingredient. Pity there's no top-tier chef to prepare it."