俺が好きなのは妹だけど妹じゃない

Suzuka Nagami, her school's student council president, writes a light novel about a little sister devoted to her brother and wins a debut award with it. Wanting to keep her position and stay out of her strict father's line of sight, she begs her older brother Yuu, an aspiring novelist who has never made it past the contest's first round, to front as the published author under her pen name, Chikai Towano. The arrangement drags in his editor Reika Shinozaki and the rival author and illustrator sisters Haruna and Akino Kanzaka.