MTL - Deliberately Contaminated - Chapter 50

System, “You have a sickness. Moreover, you’ll have one in every world.”

Hao Ritian, “…”

System, “What’s wrong? Is there a problem?”

Hao Ritian smiled, “No, there’s no problem. I was just a bit excited.”

System, “…”

That smile intensified the system’s feeling of ominous foreboding. It has had this premonition since it learned the name of its host. Now it only prays that this is all its imagination!

Ps: Protagonist shou 1v1, the gong is always the same person.

- Description from Novelupdates

Su Xiao is a cold-blooded teenager who’s seeking vengeance for the death of his family, yet things ended up badly for him.

As he was taking his last breaths, he heard a voice calling him from dimensions, it was a strange system reaching him, asking him if he wanted to be saved, to be Reincarnated.

He just needed to accept a contract, Su Xiao didn’t have any choice but to do so, but he didn’t know what he signed up for!!

Traveling through worlds, doing extremely dangerous missions, collecting special items, leveling up, and even killing Protagonists…

But Su Xiao wasn’t any ordinary Contractor, Su Xiao was a Hunter!

The MC crosses over to: One Piece, Tokyo Ghoul, Naruto, Fullmetal Alchemist, Attack on Titans…

- Description from Novelupdates

For five years, Kian tried to beat End Realms: Arcadia — a brutal fantasy game no one ever cleared.He knew every quest, every secret, every ending.And yet, after countless failures, he died… with only one regret.Then he woke up — not as a hero, but as Luca Valentine, a useless extra doomed to die in Chapter 3.Now, on his 1,432nd try, he can’t afford to die.But Luca knows the world inside out.He thought he knew the story. But the story may know him better.

The young lord of a small and weak country saves a dragon beside the sea one day.