The supporting character's harem is very normal - Chapter 529: Kill him!

Third Miss Luo relies on her father’s power to create chaos everywhere and is notorious for bullying the weak. When she had nothing to do, she led a group of servants to the streets to flirt with beautiful and handsome boys. For Princess Qingyang, if this kind of person dared to behave wildly in front of her, she would just kill her with a single finger—until she opened her eyes again and found that she became Third Miss Luo, Luo Sheng.

- Description from Novelupdates

Lane Allen, an A-rank Guide, got injured on an emergency mission suppressing a dungeon break, and perished in his almost-lover’s arms.As the remaining members of his team continued to fight for their lives, in a fancy apartment in a distant part of the city, a young man opened his eyes.“Phew… That hurt like hell…”“It’s a bit of a shame to switch so soon… But I guess it is what it is.”“Anyway, who should I become next?”Actually, Lane Allen was not a Guide, but rather an Esper with a mysterious Plunder ability! It allowed him to possess other people’s bodies, and steal their awakened abilities. Keeping his real body safe, Lane could enjoy life to the fullest, constantly swapping identities, and doing whatever he wanted without ever worrying about the consequences! How great was that?Except…Damien Lennox grabbed Lane’s arm, and pressed him against the wall, his clear green eyes staring down at Lane intently, as if he could see right through him. “There’s no one else whose guidance feels so harsh and chaotic, yet pleasing at the same time.”It seems that Damien was somehow able to recognize Lane even after switching identities, and is unwilling to let him go?

When she woke up again, she found herself become a peasant’s wife…

Kim Jeongjin, an editor of a publishing company on the brink of closing due to bankruptcy, ends up transmigrating inside a fantasy novel as the incompetent youngest son of a wealthy family.

And here he thought that he should live a rich life in this life…

“Why was I given a high-level skill? Don’t even bother!”