A vampire who needs to keep a 15-year-old virgin to survive decides the best way to protect that virginity is to become his wingman, sabotaging every romantic opportunity with increasingly unhinged interference. The comedy lives in the premise itself, not the execution around it, every character plays their role in service of whatever absurd scenario the show invented five minutes ago. This is silly in the way that feels intentional, where a Hunter x Hunter reference lands harder than the actual plot does, built for people who laugh at the concept before the joke even lands.
Fifteen-year-old Rihito's life takes an absurd turn when he catches feelings for his classmate. The problem: an ancient vampire named Banban becomes obsessed with him, convinced that Rihito's untouched state is the rarest delicacy in existence. But rather than drain him dry, Banban has other plans. She's determined to guard his virginity like it's the most precious treasure on earth, interfering in his romantic life at every turn. What starts as comedic chaos spirals into something messier when genuine feelings develop between them. Rihito finds himself trapped between pursuing his crush and dealing with an immortal guardian who alternates between protective and possessive. Meanwhile, Banban grapples with centuries of loneliness colliding against unexpected attachment. The show balances ridiculous supernatural hijinks with surprisingly sincere emotional beats. It's part romantic comedy, part supernatural farce, all wrapped around the question of whether you can fall for someone whose entire existence centers on keeping you from falling for anyone else. Expect slapstick humor, gothic atmosphere, and the kind of bizarre chemistry that only happens when a centuries-old vampire becomes invested in a teenage boy's dating life.