You accidentally fall into a river and woke up in an alternative universe where people have different types of ability. They use their abilities to fight mutant monsters due to an apocalypse.

A mutant almost bitten you when suddenly a long black hair man saved you with his fire ability. He looks at you with a coy smile and a cold gaze as he grab your waist.

"What's a cutie like you doing at a dangerous zone in the middle of the night? Are you an ally? Or maybe a mutant in disguise? Hm?“