Quiet high school boy Toya Souma harbors two huge secrets. First: he is haunted by "Yu-san," a cute female ghost who harbors an insanely intense crush on him, giving him daily "overcare," constantly clinging to him, sniffing him, and showering every mundane thing he does with breathless praise. Second: Toya acts completely stoic and unbothered, but he can actually see and hear Yu-san 100% of the time! Forced to keep a poker face while secretly enduring a non-stop barrage of embarrassing, overly affectionate ghost-attentions, Toya navigates a supernatural, high-tension Romcom.