A reverse harem story where the main character is male! Leon reincarnates into the world of the otome game he played in his past life, as the third son of a poor baronial family. It's a fantasy world with floating continents and airships traveling the skies. But Leon can't simply enjoy himself because he knows this is the world of that otome game with its flimsy settings. In this world, Leon is reincarnated as a "mob" whose name doesn't even appear in the game. At the academy, it's common for girls to keep subhuman species as personal servants. Boys aren't allowed to keep subhuman species, and they always struggle in the marriage market. However, the princes who are the targets in the otome game are exceptions, surrounded and adored by girls. Seeing this, Leon grows angry at the unfair circumstances. Believing that he has been reincarnated into the world of a flimsy otome game, Leon uses his game knowledge and underhanded tactics to overcome various difficulties in order to seize a peaceful future! ...or so he thought. Note: This novel has been published by GC Novels. Complete in 13 volumes. Audiobooks are also available (3 volumes as of April 2024). Answering the survey accessible via the barcode or URL on the back cover and inside flap of the book grants access to survey rewards. From volume 3, the survey reward is the "Marie Route (approximately 2 books worth of content if you have the physical book)".