Omega Ni Dake Wa Naritakunai!! ~Isekai Tensei Shitara Ane No Bl Manga No Nakadeshita~

Ωにだけはなりたくない!! ～異世界転生したら姉のBL漫画の中でした～, 异世界转生后进入了姐姐BL漫画中的我唯独不想成为欧米伽！, I Don't Want to Be Just an Omega! ~I Was in My Sister's Bl Manga When I Reincarnated in Another World~

I Became An Evolving Space Monster