The Reborn Otaku's Code of Practice for the Apocalypse - Chapter 5

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

Su Hao traveled through the city and came to a world of integrated novels, and became one of the villain’s male supporting characters. He even kidnapped the heroine at the beginning.

Su Hao was a little panicked. In this world, various protagonists were born…

The son-in-law of the Dragon King pretends to be a pig and eats a tiger, a super hero started from scratch, the soldier king returns, a peerless killer, an entertainment king, an immortal anchor, and an immortal respects life…

Facing the children of luck, what should he do?

“Ding – The host’s mood fluctuations are detected, and the Destiny Villain system is activated. Please make the following choices.”

[Option 1: Release the heroine, as if nothing happened, reward: Eliminate the identity of the host villain as a male supporting character! 】

[Option 2: Hunt down all the protagonists and become the villain of destiny, reward: lucky ten consecutive draws! 】

Since then…

Su Hao takes heaven and earth as the chessboard, and the protagonists of all walks of life as chess pieces, becoming the ultimate boss behind the scenes, dominating everything, covering the sky with only one hand…

- Description from novelbuddy

The main character is reborn as a character from a game he played in his previous life. This character falls into ruin along with the villainess, spending the last of their years together. A man named Kururi Helan.

High society CEO Big BOSS Lu expresses that he’s felt stifled recently. Ever since a woof style creature intruded upon his home, his life has become a complete mess. A slight conflict in opinion and his couch is hijacked, his desk seized, his lap forcefully occupied, even his bed was forcefully dominated!

The small Sammy, with his head resting upon his waste removal official’s thigh and four paws facing the sky exposing a soft little belly, with a face full of untainted purity and a pair of innocent eyes: “Woof~”

Big BOSS Lu lowers his head and makes eye contact for three seconds : “…. Give give give! Whatever you want, I will give it to you!”

- Description from Novelupdates