Muramura Shiteshimau Noroi no Youtou to Issho ni Isekai he Mayoikonde Shimatta Ken - Moto no Sekai he Kaeru Tame ni Dorei wo Hikiite Harem Party de Dungeon Kouryaku Shimasu

Rintarou Itoshiki, an ordinary high school boy, was supposed to be maintaining the famous sword "Muramura" passed down through his family, but before he knew it, he had been transported to another world. Furthermore, the true identity of Muramura is a cursed sword that forces the user to ejaculate as many times as the number of enemies defeated──!? To return to his original world and to suppress his overflowing abnormal sexual desire, Rintarou resolves to form a harem party and conquer dunge...