MMORPG: Divine Monster Transmuter - Chapter 1034: The Migration Of The Divine Realm

He became a teacher at the best magic academy in the empire.
….For being mistaken for someone else.

There were women approaching me, who had decided to die.

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

In this world, there is the beautiful mutual and telepathy love.