Isekai Manga

Haru Koyama was an ordinary student until her moron classmate got them both in a terrible accident. Now Haru has been transported to another world where only men are allowed to be adventurers. Determined to make the most of it, she takes a job in the Blue Cat Nocturne brothel to make a living the only way she knows how. No cheat abilities, no powers, just her quick wits and naughty bits!

[ From Ginrezis ] After her sudden death at the hands of an assassin, the former granddaughter of a Yakuza boss reincarnates into an otome game as the heroine. The game is, of course, set in the time of early European mafia (but with magic and other special abilities somehow)—specifically a kingdom where the royal family is supported behind the scenes by five major crime families! "Please God, whyyy, I only wanted to life a normal life!" A dangerous love game between a former Yakuza heiress and her villain fiancé begins!

"Just when I was finally resigned to my fate... romance suddenly blooms in my eighth life?!" In order to broker a peace with an enemy nation, Princess Fiona is sent off to be the concubine of their crown prince, Othniel. Her new husband treats her as little more than a political hostage, and she is soon executed on false charges, or poisoned, or worse... Yet no matter how she meets her end, she always goes back to the same day and restarts her life from there. Determined to survive her eighth life no matter what, Fiona vows to give up her hopes of love and be content with life as an ornamental bride, but now, after seven straight lives of hating her on sight, Othniel seems to be madly in love... "What's going on?! I was supposed to just be here for decoration!"