Wait, My Girlfriend Turned into Ultraman?

So Ultraman really does exist.

A hundred years after humanity set its sights on the stars, alien invaders descend upon Earth, and an apocalyptic crisis looms.

"Don't worry, we'll handle this." A highly advanced civilization comes to the rescue. "You two humans, take these rings. Just put them on and bump them together, and you can summon us to Earth..."

"Hey!! It takes two people!"

"Huh... you... said... what?"

Fang Xiaona, who fused with herself, transformed on the spot into a giant superhero.