Ryousuke, an aspiring light novel writer who posted novels on a free posting site on the internet finally gets his novel, 「Yuusha tensei 」, turned into a light novel, but on volume one's day of release, he meets with an accident. When he comes to, he finds himself in the world of the light novel he wrote,「Yuusha Tensei」. He has reincarnated as the hero's greatest rival and the popular villain, Carlo-De-Medici This is five years before the hero will be reincarnated. Ryousuke resolves himself to play the villain perfectly as Carlo, and lead the yet unfinished story of his creation to its ending―― This is his comedic yet serious, slightly sexual, slightly otaku-like story as he tries his best to play a brilliant villain. The timid, cautious, conflict-hating, 22-year old Cherry (virgin) and figure-loving second-dimension-otaku protagonist will have to, with his comrades the Strongest Knight (handsome man), the Masked Fairy (huge breasts), the Magician (cat-eared girl), the Female Thief (legal loli), the Butler (bald guy), desperately try his best to play the broadminded, arrogant villain, Carlo. It is an easy-to-read story that is a bit full of jokes.