This is a show that makes you laugh and then immediately check whether you should be laughing. Ranmaru is a 450-year-old vampire with one very specific vintage on his palate, 18-year-old virgin blood, which means his entire arc is a three-year waiting game and a full-time cockblocking career against a 15-year-old with a crush. Reviewers keep reaching for Hisoka, and they're right: it's the same energy of a monster patiently letting the fruit ripen, except played as pure slapstick. The comedy runs on misunderstandings, self-aware romcom cliches getting detonated in real time, and Ranmaru treating Rihito's love life like a national security threat. Nobody here has hidden depths, and the show knows it, the characters exist to serve the bit and the bit is relentless. If the predatory premise reads as a punchline to you, you'll be wheezing. If it doesn't, you'll bail by episode two, and that's a fair trade.

Ten years ago, a young boy named Rihito Tatsuno saved the 450-year-old vampire Ranmaru Mori when he was close to death. Since then, Ranmaru has worked at the Tatsuno family bathhouse while hiding a secret: he intends to drink Rihito's virgin blood once the boy turns 18. His plan is thrown into doubt when the 15-year-old Rihito falls for a girl on his first day of high school. Jealous and worried that Rihito's purity will be lost, Ranmaru starts watching over him from the shadows, keeping his true identity concealed while making sure Rihito stays a virgin. The result is a supernatural romantic comedy built around one vampire's very selfish mission to guard a teenager's love life.