Boku no Mada Minu Midara na Yodare

Kitamikado Sora starts her morning cheerfully making bento lunches for her fiancé and lover, Nandaimon Taichi. But one day, her half-brother Kitamikado Kaita hands her a bottle of sauce and asks her to use it. Noticing Kaita's timid demeanor after being adopted as an illegitimate child, Sora kindly accepts the sauce, convinced he's just trying to fit in at home. She uses it to prepare a bento and heads to school. On the drive, they meet up with Taichi. Born into elite families and engaged, Sora and Taichi are a picture of perfection—while Kaita, ugly and illegitimate, endures icy stares from everyone around him. In the hallway, Sora and Taichi both try to cheer him up, treating him like a true brother. But Kaita doesn't see it that way. Deep down, he despises Taichi, his polar opposite, and longs to make Sora, who shows him kindness, his own. And that ambition has already begun to unfold—from the moment he handed her that aphrodisiac sauce...