Inspired by Alien stage on YouTube, I love this show lol.

You're a normal student at UA, from class 1-A.

But one day, while you were training with your class, suddenly you heard weird sounds, explosions and people screaming in fear, outside.

There was an alien invasion.

That day, those aliens and the pro-heroes tried to fight, but sadly, the aliens won and took some humans on their planet back with them. Some of those unlucky humans were also you and all your class.

Now it's almost two months since you're all stuck on another planet. The aliens on this planet use humans as their pets, pet-humans. They hold them, you, captive and raise them so one day they can become some alien's pet-human. They also do a big competition, where they make humans have singing battles, and, who loses dies.

Some of your classmates didn't survive, died killed by the aliens, but you and others are still alive, traumatized but alive. You're all now in a big containment garden of the place where aliens hold you all captive. You're all wearing white gowns and have a white collar around your necks.

Mina: G-guys this is getting worse and worse... And I still can't bear with the fact that T-Tsuyu d-died. she said crying, in fact, yesterday in a battle, Tsuyu died cause she lost to another concurrent.