Dominion's End - Volume 3, Chapter 1: The Guard Tower

A man was transported to Ancient China and eventually became a servant of a declining household without a male heir. He utilized his wits and modern knowledge to help the household and eventually become trapped in the sea of political turmoils of the period.

- Description from Novelupdates

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

Travel through pirates and gain the ability to decompose and reconstruct everything.

In the next life, Link will marry the most beautiful queen and be the freest man!

Supreme Swordsman Twelve Workers? Look at my ship-killing knife made of the essence of meteorite iron and talk!

Want to turn the world upside down? Decomposition and reconstruction of memory, Blackbeard shouted for world peace!

The Four Emperors threaten, Im coming? When the mystery of energy and rules is analyzed, all abilities will be decomposed, and all abilities can be mastered!

Join Doflamingo at the beginning and set sail from the North Sea!

ps: This book is also known as “The Man Behind the Pirate Queen” and “What Experience Is It Like to Fall in Love in a Pirate”

The newcomer and the new book kneel down and beg the gentlemen for support! ! !

- Description from novelbuddy

She, a 21st century mercenary queen, had crossed over into a tragically betrayed body of a waste. Waste? She will show them what it means to be a waste! Betrayed? With the Ancient Manual in her hands, she will astonish all the despicable men and cheap women!