Moto Sekai Ichi'i no Sub-chara Ikusei Nikki - Chapter 46: Dragon Horse and Dragon King

Liola—the best assassin in his world—has vowed to kill no more. He was being chased by an assassination organization when he accidentally dropped into a parallel universe: through a dimensional gate and into poor teenager Kaiser’s apartment. Instead of going to the government shelter for lost dimensional travelers, Liola and Kaiser wind up going to school together.

Liola has been trying his best to live the life of an ordinary person, but after certain things happen one after the other, he begins to realize that being an ordinary person could be harder than being an assassin.

On the will left behind by the 14 year old suicide victim K:

“Taku Sugawara is the devil. Nobody should believe his words.”

Suddenly, the unmarried twenty-year-old Ye Zhizhou had many more relatives, yet it was too late for him to clearly understand the circumstances as he nearly died in a car accident. After that, he somehow managed to survive and was even forcibly bound to a Salvation System.

How is it salvation?

Harems destroy worlds! Preventing a harem will save them!

. . . .

Ok, prevent harems. After seeing the entire system introduction, the corners of Ye Zhizhou’s mouth twitched. In order to return home safely, he decisively began his risky journey—he’d just treat it as if he was playing a large-scale strategy game.

Since then, the people the protagonist would rescue, he rescued first.The businesses the protagonist would make, he made first. The little brother the protagonist would take in, he took in first. The cliff the protagonist would jump off of, he jumped off of first. The gay s*x the protagonist would have, he’d have. . . . Wait wait, can’t do this one, change it, let me change it.

???: No, you can do this one.

Ye Zhizhou (alarmed): Who’s speaking?

???: Your husband.

Ye Zhizhou: . . . .

- Description from novelupdates

“What? That chicken is actually a phoenix?”

“You're telling me that this dog is a qilin?”

“This little lizard is the legendary dragon?”

“What kind of weird pet shop is this? When did legendary beasts become so easy to find!”

An ordinary looking shop, but what hides inside are legendary cultivation pets. Step inside, but only if you dare.