Urban Banished Immortal - Chapter 17

This isn't just a game for me, it's a fckin war! And I will conquer it, no matter what…… I'm coming for it all!A wild journey of a boy from Japan named Haruma Kusaka, who hates Football the most… Yet is obsessed with winning everything that exists in this game, creating a legacy that no one can ever match.

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

Stricken with a dull, boring life, Gael has already discarded his ambitions as a high school dropout. However, a chance encounter with death leaves him a choice:[“Meet your end accomplishing nothing, or continue on in an unforgiving world and learn what it is to live.”]Wishing not to die, he accepts the offer, being granted a new life in a fantastical, mysterious world of Gaia. In this new world, he is not granted an easy life, instead hunted as those like him, transported from Earth–”Outlanders”--are deemed to be executed on sight.He is not helpless, though, granted a unique gift upon being reborn in this world–[Integrating system into body.][...10%...][....45%...][....87%...][Integration complete.][Gacha System initiated.] [Level: 1]

Sky is not born of Shen Huan, millennium is like night.

This is a rebirth who wants to release himself, and has an interesting life story after getting a less serious system.

- Description from Uukanshu