Monarch of Gluttony: System of Sin - Chapter 61: 61: Evolution of Weapon of Sin!

Years later, Vincent meets with an infected survivor named Kevin, who helped him heal his heart. However, not all stories have a happy ending. Unfortunately, Kevin would pass away ten years later and leave a book with heroic tales as promised behind.

However, the book wasn’t as it seemed and after Vincent reads the book, it teleports him to the world the book depicts. A world of sword and magic with a horrible twist. Heroes are referred to as invaders, so people hate, persecute, and kill any otherworldy hero summoned to their world.

As an oddity to the world and possessing an oddity residing in his body, Vincent becomes the only person in the world to awaken two classes. A Hero and a Mutation class. The more retainers he acquires, the stronger he becomes through mutation.

This is the journey where Vincent starts from naive to brave, zero to a hero. From a single young adult to a harem king, from a nobody to an important person to many.

As Vincent tries to survive with people he can trust, he would receive many titles such as Harem King, God, Miracle Worker, Hero, Husband, Master, King, Monster, and many more.

Multiple questions will haunt Vincent’s thoughts while living in the new mystical and strange world.

Go back to Earth?

Protect his new loved ones?

Find the mystery of the teleporting book?

Or create a haven where he and his loved ones can live in peace?

Amamiya Hiroto is unlucky. His life consisted of misfortune after misfortune, culminating in an unlucky death during an incident on a school boat trip, trying to save a girl he barely knew. After death, he met a god of reincarnation who requested that the hundred or so dead passengers—one of them being the girl he tried in vain to save—be reincarnated into another world.

A data loving young man from Earth has an accident which transports him to a dark land filled with terrifying creatures and magical powers. Fortunately for him, he has a Biological Assistance Chip to ease his path. However, things in this bizarre and strange world are not always as they seem, and, though it is a tremendous asset, the chip doesn’t always work as expected. With all of the crazy creatures and magical mayhem around him, one can only wonder what the future holds for this young man…

- Description from novelupdates

The MC (Minato) is a college student who died in a plane crash and was reincarnated in a fantasy world. He was raised alone in the wilderness by his succubus mother, and now he tries to make his way as an adventurer.