The Hero Returns with his Yandere Wife - Chapter 50 - 49

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

After saving a dying world despite being a summoned Extra, Rey is executed by the supreme beings that exist at the top of his reality.They also slaughter his entire family and wipe out the world he sacrificed everything to protect.However, he is surprisingly reincarnated into the world of those who killed him and ruined his life. Now stuck in this higher dimension as a nameless slave, this Extra will rise up and have his revenge on those who wronged him.No one will be spared!Tags: Action. Adventure. Reincarnation. Revenge. Magic. WeaktoStrong. Romance. NoHarem. Academy. Superpowers. Transmigration. Villain.

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.