Multicrossover: I Took Utaha's Virginity At The Beginning! - Chapter 48 - 47: The Shinomiya Family’s Plan

Before going to college, an ordinary high school student went to celebrate and got drunk. When he woke up, he found himself in a completely different world. There was a big sect, the approaching sect entrance examination, a slum where his body’s previous owner lived, and a shared memory about a missing young girl.

When he got tangled in a fight with a few punks in this different world, he fell off a cliff and miraculously found himself still alive, with two more voices ringing inside his head. They were Sword Master and Saber Master. In the company of them, he continued to find out more about this whole new world. He took the sect entrance examination, entered the sect, met a strange man in black, and even participated in a major competition of the sect to have a chance to win over his peers!
In this whole new world, he was born again and got to explore the fantastic martial world!

- Description from Novelupdates

Nagasawa crossed to Naruto Universe and was bound to Konohagakure.If Konoha is severely damaged and destroyed, Nagasawa’s lifespan will be reduced.He panicked at the thought of the upcoming Nine-Tailed Demon Fox's attack , and the thought of Konoha getting destroyed left him in despair.Fortunately, while bound to Konoha, he can obtain templates of powerful characters.At the beginning, He got the Whitebeard template! Since it's the Whitebeard from the Summit War of Marineford, he can use Tremor-Tremor Fruit's ability and Haki.Facing the Tailed Beast Ball, which terrorized Konoha Shinobi, Nagasawa leaped and shattered the Tailed Beast Ball with one punch!

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

Player: I’m a worker whose monthly salary doesn’t even hit $5,000. My monthly rental already takes up half of my salary, I don’t have a girlfriend and is reprimanded by my superior every day. However, I feel very happy because there has been a new virtual game recently. In the game, I have a powerful bloodline. Not only do I have my own fleet, I even have a powerful overlord that granted me a colonized planet. Although I know this is fake, but inside there, I found the meaning of my life!

Actually…the overlord who gave him the planet really wanted to tell him that this game wasn’t fake. (You really have your own fleet and colonized planet…) but the overlord knew that he couldn’t say this. Because, once he said it, these subjects who thought of themselves as ‘players’, would definitely not be as terrifyingly hardworking as now!!