Global Reincarnation: Only I Know the Plot - Chapter 941:

(No Female MC + Ruthless + Infinite Style + MC is not a saint)“Are you tired of mediocrity? Do you crave power?If you want to break free from the ordinary and possess power that surpasses all beings, then join this game.”Ye Shuangluo was chosen by a mysterious game to become a reserve player. As a player, he must face opponents from other parallel dimensions and multiverses. Fortunately, Ye Shuangluo awakened his unique talent: “Achievements Master”. By accomplishing a series of achievements, he can obtain countless powerful skills and attributes.When the cross-server war begins, foreign players traverse the spacetime gate to his star. Ye Shuangluo stands above the sea of stars and strikes with a single slash. The unparalleled blade aura instantly annihilates all invading enemies. Facing the countless terrified enemies on the other side of the spacetime gate, Ye Shuangluo sighs and says leisurely:“I really just wanted to quietly rack up achievements, why did you have to force my hand?”

That night, she shed off the image of a young maiden’s immaturity, forming a ripple in the deepest parts of the Cold Palace…

That day, she kneeled before him begging for mercy. She didn’t want anything. She only wanted to leave the palace and become an ordinary girl….

A bunch of elegant and good looking heavenly princes. A lowly palace maid with a mind as calm as still water.

If they were to meet, would it be an encounter like dewdrops and the autumn wind or would it be a lament of a country…

- Description from Novelupdates

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.

What the heck? She, a famous doctor from the 23rd century, turned into a village peasant girl of a different world!