"I'm Musashi Haruno. Also Ultraman Cosmos."
"And you are?"
Musashi looked at this man who felt both familiar and strange. Smiled gently.
They stood on a grassy field. Behind Musashi, Lidorias blinked curiously... In the distance, a family of three waved at another Kaiju with their child.
Planet Juran—a world where humans and Kaiju coexisted peacefully, built jointly by the compassionate warrior Ultraman Cosmos and humanity. As Planet Juran developed... ordinary people living on Earth could take rockets to visit this planet.
"Natsuki." Natsuki introduced himself.
Then, realizing the other might not recognize that name, added: "Or maybe you'd remember the name Lias."
Hearing "Natsuki," Musashi seemed uncertain. But hearing the second name—recognition sparked.
"Ah, I remember now."
His tone filled with nostalgia. "When I fought alongside Zero, he mentioned you often."
He knew something about Lias. Once a very powerful Ultra Warrior...
Though never officially acknowledged as an Ultra Brother, the outside world always considered him one. A reliable senior in young warriors' eyes.
"Come to think of it, this is our first meeting." Musashi smiled.
He'd visited the Land of Light before, but the other was on an external mission then. They'd just missed each other.
"Indeed." Natsuki smiled back. Nodded.
"Zero was in your care back then."
In the past, Zero had traveled to a parallel universe's Earth. Encountered extremely powerful enemies. Met Cosmos and a warrior named Dyna. Only by borrowing their power did he awaken a miracle and defeat the terrifying foe.
His own strength no longer matched the past. Couldn't protect that kid when crisis struck. So he felt grateful to Cosmos.
"Not at all... Zero helped us in many ways too." Musashi replied modestly.
These Ultra Warriors always displayed qualities that shone with light.
"What brings Lias-senpai here today?" He asked curiously.
Normally, Land of Light warriors executed missions frequently. Few had time to visit Planet Juran. Natsuki was quite the rare guest here.
"It's a long story..."
Natsuki sighed slightly. Prepared to explain his situation.
"Come with me first. Let's talk there." Musashi saw Natsuki might've encountered trouble. Led him toward a building with extensive transparent glass coverage. The first floor looked like a restaurant.
He'd listen carefully to Natsuki's troubles. See how to help.
After finding seats inside, Natsuki began explaining: "I'm currently executing a special mission. On that universe's Earth, Kaiju also exist..."
He relayed that Earth's situation to Musashi. Explained what enemies triggered the coming war.
"On that Earth, enemies manufactured massive Kaiju weapons. Also controlled some Kaiju originally sleeping underground."
"I'm thinking how to free those Kaiju with no invasion intent from their control before war breaks out." Natsuki said.
The Ultraman Cosmos before him was an expert in human-Kaiju coexistence... Held grand ideals in his heart and possessed the power to realize them.
"I remember you have an ability to free Kaiju from rage and control."
"Could you teach me that ability?"
If he could learn Cosmos's ability, that situation would be manageable.
"Of course." Musashi agreed without hesitation.
Or rather—he had no reason to refuse.
However, this ability was extremely difficult to learn. Ordinary methods couldn't master it.
The highly purifying Full Moon Rect wasn't something every Ultra Warrior could grasp. In such short time, he worried it wouldn't be enough.
"I'll travel to the universe where your main body is. Help you master the Full Moon Rect. Also help you resolve that war." Musashi quickly decided.
Mutual assistance between Ultra Warriors was that simple.
Complete trust existed between them.
"Come directly?"
"That works." Natsuki hadn't expected this pleasant surprise.
Having Cosmos personally come fight alongside him? Naturally the best outcome.
Forget purifying Kaiju—just in combat power, Cosmos already surpassed most Land of Light warriors.
More terrifying still—he had direct connections to legendary-tier existences: Ultraman Legend and Ultraman Saga.
If someone got deceived by his compassionate Luna Mode, thinking he was some powerless peacemaker... when he pulled out Corona Mode or even Future Mode, they'd learn the meaning of regret.
"Here are that Earth's spatial coordinates." Natsuki displayed the bracelet's data to Musashi. "I'll make some preparations there. Once you arrive, we'll execute the plan."
"Understood." Musashi nodded.
"I'll arrive as soon as possible."
Possessing spatial traversal abilities, Ultraman Cosmos traveling to other universes wasn't difficult.
Gaining Cosmos's help—this result far exceeded expectations.
Natsuki nodded and smiled at him.
Then looked at the bracelet on his right wrist. Prepared to exit here. Return to that Earth.
However, after searching the bracelet's interface extensively without finding an exit button—
The smile on Natsuki's face suddenly froze.
Babar's balls.
He forgot this damn bracelet never let him exit training.
Every previous training session—he got tortured from start to finish. Looked like now was no different.
As long as his main body there wasn't in danger, he couldn't exit during training.
"Wait..."
"This training didn't even specify a time limit??"
"Don't tell me it won't let me exit until I master the Full Moon Rect!?"
Natsuki's complexion instantly turned greenish.
Like he'd eaten Bemular's excrement. Miserable.
"Something wrong?" Seeing Natsuki's expression, Musashi asked with concern.
"Uh... the situation got complicated again."
"Learning the Full Moon Rect—looks like it has to happen here."
"And fast." Natsuki answered, face twisted.
"Eh?" Musashi looked confused.
"Use every method you can imagine. Worst case, treat me like a Kaiju. It's fine... I'm used to it." Natsuki's entire color seemed to fade.
Musashi: "???"
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