The setup sounds like every arranged marriage rom-com ever, then it immediately refuses to follow the script. Kobeni and Hakuya have chemistry that works because neither of them is trying to win you over, they're just two people figuring out what it means to live together without pretense. The show trusts its cast enough to let moments breathe instead of punching every joke, which makes the actual laughs land harder and the quiet conversations feel earned.
Kobeni's sixteenth birthday arrives with an unexpected shock: her late grandfather arranged her marriage to a complete stranger. She has no memory of ever meeting Hakuya, despite supposedly knowing him since childhood. When he and his peculiar younger sister Mashiro move into her house, things only get weirder. Hakuya seems perfectly normal on the surface, but something feels fundamentally off about him and his family. Mashiro obsesses over aliens and cryptids with unnerving intensity. Her parents act like they're hiding something major. As Hakuya starts attending Kobeni's school, the mystery deepens. Small inconsistencies pile up. Strange moments accumulate. Kobeni finds herself caught between accepting an engagement to someone she doesn't understand and the growing suspicion that her fiancé and his family aren't entirely what they appear to be. Comedy unfolds through her attempts to navigate daily life with these bizarre circumstances while slowly uncovering exactly what makes Hakuya and Mashiro so mysteriously different from everyone else.