Responses
a ranker's guide to an ordinary life, housekeeper in a dungeon
https://www.mangago.zone/read-manga/hero_killer_1/
https://www.mangago.zone/read-manga/survive_romance/ this one is a little diferent from what you said but really good tho
Mangas like i stole the number one rankers soul or something where their is action like monsters, fighting, or a "system" but with ONE female love intrest or a main one no harem please ~