The Slime of Slaughter: Become Monster

Mind and memories of a human. Body and emotions of a monster.

Giving up on his future to avenge his sister's suicide, he dies just to be awakened in the unfamiliar world in the alien body. Feeling appetite for flesh and holding no empathy for living creatures, will he be able to stay true to his human sentiments when his whole existence is the Evil itself? But first, he needs to survive because in this foreign world his new form isn't welcomed, to say the least.

He will have many enemies in this new land. But the hardest fight is the one against himself. Both metaphorically and not so much...

Cat Companion. Check.

Dark and cruel world. Check.

A little bit (?) of madness. Check.