Not Evil Just Monster

"The criminal known for committing the most heinous crime in history reincarnates after death—inside the body of the son of humanity’s savior, born into a noble family in a strange world.

He wakes up in a place with no power-up systems… just him and his new body.

At first, he planned to end his life, but then he stumbled upon a chance to atone for his past… maybe even turn his hellish past into a paradise.

But that paradise might demand a terrible price—half the population of this world… or perhaps… the lives of its true heroes.

‘Heh… So what if it does?’"