I Became an Evolving Space Monster - Chapter 382

[2020’s Most Thrilling Soldier King Novel Online!]The Dark World’s number one assassin—Ye Huan, who strikes fear into the hearts of leaders across nations, is forced to return to Huaxia and marry an icy CEO due to an order from his mentor. Simplicity and directness are my art of dealing, and taking action if unsatisfied is my life attitude. Can money buy anything you want? Sorry, but the number of digits in my bank account exceeds those in your ID number!Watch as the top assassin navigates the bustling city, tramples over arrogant youths, and unifies the world of elites!

In the end, war couldn’t be extinguished. But, there was a transformation. Even in the heart of a worthless accomplice in murder who was indifferently continuing his task, there was a transformation. The massive weapon “Object”.

This was a weapon that changed the whole definition of war. An exchange student named Quenser, who was dispatched to the battlefield, met at the base a girl with a strange aura. The girl, dubbed “Elite”, is the pilot of “Object”. The near future. This diminutive boy had come to take on the role of standing up against the strongest weapon “Object” for the sake of the girl. This was the motive for their first meeting.

Chen Mobai, a third-year student of Xianmen No. 5 High School, is working hard to review and prepare for the entrance to Daoyuan. The direction of his efforts is: to develop a new world

- Description from novelbuddy

Another entry in what you can call the Proto Harem Series: the books written before the Harem Series that take place in the same world.

It’s about a swordswoman whose student is captured, so she goes to rescue her.