I'm Really Ultraman!

"My name is Ai Xi, and I'm from the distant M78 Nebula."

"My dad is Ultraman Ace, and my mom is Minami Yuko, the last person from the moon."

"My age? Well, as a girl, I find it a little offensive to be asked how old I am. But because I love Earth so much, I'll make an exception and tell you: I'm 5,900 years old, a young warrior of light."

"Who is this Zero I keep talking about? Oh, Zero is my annoying childhood friend. I hate to admit it, but he's really strong!"

"So, young boys and girls! Do you believe in the light?"

Everyone: "..."

What a pity. Such a young girl, and already having mental problems.

Later:

A Special Grade Cursed Spirit descended on Tokyo and unleashed its innate domain, slaughtering humans indiscriminately.

The jujutsu world sent sorcerers there, prepared to die.

Then they saw it:

A Giant of Light stood before the Special Grade Cursed Spirit, striking a battle pose.

"Metalium Beam!!!"

One hit, one victory. The Special Grade Cursed Spirit vanished into dust.

"Suguru! Satoru!"

The Giant of Light gradually faded away, its radiance condensing into a girl who cheerfully waved and ran over to them. "Was I awesome?"

Gojo Satoru/Geto Suguru: Turns out I'm the clown.jpg

Back then, Father Ace earnestly advised her: "Xixi, you have to understand. After your father was forced to reveal that he was a warrior of light, he had no choice but to say goodbye to the Earth he loved, no matter how much he hated to leave. But I have always believed that a passionate heart can never be extinguished..."

Ai Xi nodded solemnly. "Okay, Daddy! I understand, Daddy! I'll absolutely keep my identity a secret, Daddy!"

Ai Xi later, shouting into a megaphone: "I'm an Ultraman!"

Ace: "..."

Later still:

Ai Xi, wearing a serious expression: "Any living creature feels pain when attacked. Cursed spirits don't feel that way."

Mahito and the other cursed spirits: "Bullshit!"

Ai Xi, who had clearly inherited her father's skills: "Vertical Guillotine! Horizontal Guillotine! Circular Guillotine! Multiple Guillotine! Ultimate Guillotine!"

The cursed spirits, weeping bitterly: "Please just finish us off with a beam!"

Cursed spirits don't feel pain (X)

I think cursed spirits don't feel pain (X)

I don't care whether you feel pain. If I say you don't feel pain, then you don't (check)

And later still:

After traveling across worlds to find his childhood friend, Zero said, "Hey, Ai Xi, it's time to come back with me..."

Ai Xi: "Huh? You want me to come with you? You're still two thousand years too young!"

Zero: "Hey, don't just go stealing other people's lines!"

Zero: "Tch, so why do I have to stay on this Earth too...?"

Ai Xi: "Charge! My brave members of the Lily Earth Defense Force!"

Zero: "Hey, don't go renaming Jujutsu High or the Port Mafia after yourself and calling it the Earth Defense Force!"

*The heroine really is an Ultraman, and the male lead is one too.

*A sudden little idea. It won't be very long, but if people are enthusiastic after I start posting, I'll consider making it longer.

*I want to write some fun scenes where a Giant of Light (a beautiful girl) suddenly barges into crossover worlds and crushes everyone by sheer power. Other than the heroine, plenty of familiar Ultramen will show up too.

*I'll try to make it easy to understand, even for people who don't watch Ultraman.

*As usual, this is my kind of adored little-sister story. The heroine is the Land of Light's favorite.

Theme: A passionate heart can never be extinguished. Care for the weak and help one another, and you can become friends with people from any country.