MTL - My Inseparable House Guests - Chapter 243 determine

Naofumi Iwatani, an uncharismatic Otaku who spends his days on games and manga, suddenly finds himself summoned to a parallel universe! He discovers he is one of four heroes equipped with legendary weapons and tasked with saving the world from its prophesied destruction.

As the Shield Hero, the weakest of the heroes, all is not as it seems. Naofumi is soon alone, penniless, and betrayed. With no one to turn to, and nowhere to run, he is left with only his shield. Now, Naofumi must rise to become the legendary Shield Hero and save the world!

Zhou Youlin, a famous ice queen of the special forces. During an accident in her mission, she was betrayed by her squad mates and was shot twice. She died on the spot. When she woke up again, she became the useless madam of a rice family and was a resentful wife who was neglected by her husband. Her son, too, was neglected.“If I’m not mistaken, we’re already divorced. You’re currently invading my home, my dear ex.” Zhao Youlin raised her chin and sat at the end of the couch with her legs folded. She looked prideful.Mu Tingfeng was expressionless. “We can get married again.”Zhou Youlin quirked her eyebrows. Then, she swung her hand, and a large number of handsome men’s pictures were spread on the table.“Baby, be a good boy and choose someone you like to be your stepdaddy, okay?”Mu Tingfeng’s expression… turned dark.

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