From Goblin Slave To Giga-Daddy: A Goblin's Guide to Getting a Harem - Chapter 3: Gugu Gaga Monster!

An Extra is a minor background character with little to no influence on the main story. Their purpose is to fill out scenes and represent the larger world in which the story takes place.Yet,One Extra defied its existence. One Extra destroyed the story.********Luke, an editor, was transmigrated into the story with one goal:“Kill The Extra.”

A Federation Colonel with abnormal thoughts was locked in a dark room and met a little looney.

“Your whole body emits a scent that I dread (covet) and fear (desire).”

A frigid Colonel X little looney roommate: A sweet story of interstellar travel

- Description from Novelupdates

A veteran gamer finds himself in a world similar to the game he played.You say you need to learn skills by leveling up? Sorry, I already know all of them.You say you have to meditate to level up? Sorry, I only need to fight monsters for that.