In the original storyline, Asakura Tetsuya handed Father of Ultra's capsule to Riku. From that event, it can be inferred that the host of the Little Star can release it simply by praying to an Ultraman who is currently in human form.
At that time, after Riku's capsules were stolen by Kei Fukude, only the Zero Capsule remained.
In that desperate moment, Asakura's Little Star leapt into Riku's pocket on its own.
Yu Zhou thought about this carefully and quickly came up with a plan.
The elevator appeared in the park.
Mayu was sitting alone on the slide—perhaps still shaken by Pega, or simply lost in her thoughts.
Yu Zhou and Rito approached her. Rito knelt down and began to comfort Mayu, trying to calm her trembling heart.
Just then, Riku and Laiha also arrived by elevator. Seeing Mayu's depressed look, both of them were at a loss for words.
"Mayu, do you want to eat lots of tasty snacks?"
Yu Zhou crouched down, smiling warmly as he asked.
"Snacks?!" Mayu's head immediately popped up, her eyes sparkling. "Of course I do!"
"Look." Yu Zhou pulled a bag of chips from his dimensional bracelet. "Chips. Want some?"
"Yes!!" Mayu's answer was immediate.
"And lollipops? Want those too?" Yu Zhou produced a whole box of them.
"Yes!" Mayu grew even more excited.
"And these." With a wave of his hand, Yu Zhou conjured a pile of snacks in front of her. "What about these?"
"YES!!!"
Rito blinked in disbelief.
Seeing Yu Zhou produce snacks from thin air wasn't surprising—after all, he was Tiga, having a few special abilities was only natural.
But the way he handled Mayu left Rito speechless.
Her daughter did indeed love snacks—what child her age didn't?
"Mayu, if you want these snacks, you'll have to ask me properly to hand them over. Think of it as a snack-exchange ceremony," Yu Zhou explained patiently.
"Then… Uncle, please give me the snacks!" Mayu said without hesitation.
"Uncle…??"
Yu Zhou froze. Sure, he was technically twenty-five years old, but in his original world, he had only just turned twenty-one! Even twenty-five wasn't that old! How did he suddenly become "uncle"?!
While Yu Zhou was still stunned, a light burst forth from Mayu's chest. The glow floated free of her body, forming into a shining orb, and gently flew straight into Yu Zhou's pocket.
"It worked?!"
Rito's glasses were lifted as Zero took over his body, staring wide-eyed at the Ultra Capsule that had flown into Yu Zhou's pocket.
Behind them, Riku and Laiha were just as dumbfounded.
So… Yu Zhou had simply talked Mayu's Little Star out of her?
Laiha had been prepared to give a long heartfelt speech, to share her own story with Mayu, to convince her to return to the Nebula House. But Yu Zhou… had gone with a far simpler method. Snacks. And it had worked.
"Uh… Mayu, you can just call me big brother, okay? I'm not that old," Yu Zhou coughed awkwardly, trying to correct her.
"Got it, Uncle!" Mayu replied happily, munching on her snacks.
Yu Zhou: "..."
Rito put his glasses back on, regaining his own consciousness, and let out a relieved sigh. "Good. With the Little Star gone, Mayu is safe now."
But in that very moment, a massive shadow descended from the sky, crashing onto the ground with a deafening boom. The creature roared fiercely, shaking the earth beneath their feet.
"What?!" Riku frowned deeply at the appearance of the monster. "The Little Star's light has already vanished. Why is there still a monster showing up?"
"Could it be… Kei realized he stole the capsules, so he's trying to force Riku into fusing with Geed?" Yu Zhou wondered silently.
But this wasn't the time to dwell on it. The monster was already lumbering closer, each step making the ground quake.
"Rito, take your daughter and run! Leave this monster to me."
Yu Zhou shouted, then broke away from their sight.
Rito immediately scooped Mayu into his arms and ran with Laiha and Riku back to the elevator, retreating to the underground base, Nebula House.
Yu Zhou pulled out his Spark Lens, glaring at the massive creature as he pressed the transformation trigger.
The monster was Tyrant, the so-called Tyrant Monster. It had once defeated the Ultra Brothers in succession— even that man had fallen to it before.
Yu Zhou wanted this fight.
Back in Ultraman Ginga, Hikaru Raido had used a Spark Doll to transform into Tiga and face Tyrant—but the battle had been pitifully one-sided. Tiga had looked weak and clumsy.
"Today, I'll see for myself what makes you so powerful—Tyrant, the so-called conqueror of Ultras!"
With a flash of light, Tiga appeared before Tyrant. The monster instantly locked its bloodshot eyes onto him.
Meanwhile, in the shadows, Kei Fukude revealed half his face, smirking.
"So that's it… Yu Zhou is Daigo… which means this man is Tiga." He chuckled darkly before vanishing.
Yu Zhou didn't notice. He had no time for distractions. Tyrant swung its scythe-like arm at him with murderous force.
Yu Zhou reacted swiftly—he caught the weapon arm and shoved it back, forcing Tyrant to slash itself across the chest.
The beast howled in fury. Enraged, it thrust its other arm—ending in a spiked iron ball—straight at Yu Zhou.
With a sidestep, Yu Zhou dodged and countered with a heavy punch to Tyrant's head.
The monster staggered, then spread its arms wide. Its ears glowed blue, firing a barrage of energy beams.
Yu Zhou raised his hands, firing back a flurry of light arrows. Their attacks clashed mid-air, exploding in bursts of sparks and canceling each other out.
"Tyrant, the monster once known for defeating five Ultramen in a row…"
In the underground Nebula House, REM's holographic light ball flickered, presenting the data on screen.
"So strong?!" Riku gasped in disbelief.
"Yes," Zero, speaking through Rito, nodded gravely. "Long ago, my father Seven, along with Zoffy, Jack, Ace, and Ultraman himself—all fell to Tyrant. In the end, it was Taro who finally destroyed it."
"That strong, huh…" Riku frowned, troubled by the thought.
"But that was then. Back in those days, everyone's strength was still unrefined." Zero raised a finger, waving it confidently. "Now, Tyrant is nothing to fear."
"That's a relief."
Watching Tiga handling the battle with ease on the monitor, Riku let out a breath.
"Another monster has appeared. Location: the slopes of Mt. Kōsei."
REM shifted the display—another monster had emerged.
"That one… I've already defeated it twice!"
It was Skull Gomora—the skeletal Gomora Riku had fought on his very first mission. He had already destroyed it twice, yet here it was again.
Riku's head throbbed. "Again…?"
"That's Kei's doing," Zero said coldly, staring at the screen.
On Skull Gomora's chest gleamed a purple Color Timer crystal—the mark of Kei Fukude's fusion.
The color of Belial's timer. Kei had inherited Belial's power, fusing with monsters to evolve them.
"Leave it to me. I'll settle this!"
Riku stepped into the elevator, Laiha and Rito following behind.
Pega, now on good terms with Mayu, stayed behind to look after her in the Nebula House.
Skull Gomora was Riku's fight. Once he defeated it, the task of dealing with Kei would fall to Zero and Laiha.