Naruto: I'm Nine-Tails and My Host is Kushina - Chapter 194 : Entering Kirigakure With High Profile

He was just an ordinary orphan.At least he thought he was,That was until some group claiming to be the Hero Faction tried to recruit him for being the inheritor of a lost bloodline.

Collection of short stories.

- Description from Novelupdates

However, he did not know that he was not raising just a harmless pet, but a biological weapon secretly made by the government… a real monster.

As a former librarian, Rand felt that he had been living an ordinary life, the one that he had reclaimed unconsciously every single day.

Recently, he has been a little upset because the pet fish he accidently brought home to raised seems to have undergo some strange changes

Well, it turned into a merman.

- Description from Novelupdates

Igor had asked him to die for the world. She would ask him to die for her. Problem was, he didn't really like dying, not for a second time, at least.