Gokuakuhidou na Seiheki Kizoku ga Doryoku Shitara Seijitsu Harem Tsukuremashita

A man realized that he had been reincarnated as the extreme masochist (Do-M) villain Wraith Validoor from the Game "Holy Orb Fantasy" he used to Play in his previous life──In order to resist his own ruinous End, he resolves to begin training in magic and swordsmanship. Ever since then, starting with the Main Heroine who is destined to defeat him, the Heroines appearing in the Game begin to show up one after another before Wraith. ……But something about them has changed from the time in the Game!?

(Source: Kadokawa, translated)