Kimito was just a regular first-year high school student when he got kidnapped and dumped at Seikain Jogakkou, an exclusive, ultra-secretive academy for wealthy ojou-samas. The school had cooked up a new program designed to ease these privileged girls' transition into the real world—by throwing a male commoner into the mix. Kimito fit the bill perfectly, or so they thought, mainly because of a crucial "detail" his childhood friend Eri had spread: that he's only into muscular guys. Turns out that was total BS meant to mess with him.
Despite the whole abduction thing, Kimito's pretty ordinary. He's into cooking and looking after people, which earned him the nickname "Sebastian" back in middle school. Not long after arriving at Seikain, he teams up with a girl named Aika who wants to climb the social ladder. Together they start the "Commoner Club" as her ticket to popularity.
Content compiled by AnimeList.moe from publicly available sources.