Zenless Zone Zero: King of the Ethereals, the Mastermind Villain

[Original story, no System, a morally gray protagonist who's no fool, and all the girls want to make Ethereals with him.]

Monsters run rampant, and strange transformations abound.

This is an apocalypse ravaged by the mysterious disaster known as the Hollows.

A young man winds up here by accident, gets lost in a Hollow, and is corrupted by Ether matter.

But he doesn't lose his sanity. Instead, he transforms into the strongest Ethereal King.

He also gains a special constitution that lets him use the Ether crystals growing inside his body.

Create monsters, transform humans!

A black snake picked up by the roadside is transformed into a five-clawed golden dragon that soars through the clouds!

A lizard caught in a corner is transformed into a western dragon capable of destroying heaven and earth!

A cat hit by a car becomes an adorable, affectionate catgirl!

A rooster bought at the market becomes a trainee who loves singing and dancing!

Before long, his creations have spread throughout every Hollow, where they reign supreme!