Rascal Does Not Dream of Bunny Girl Senpai

Sakuta Azusagawa walks into a library and sees a bunny-girl-suited actress nobody else can see. Mai Sakurajima is real, recently A-list, currently on hiatus, and possibly invisible to everyone but him. The two of them have to work out why before she fades entirely — and once they do, the next case shows up: a girl frozen on a day she's living on a loop, a classmate splitting into two existing-but-not bodies, a younger version of his sister appearing at his apartment. The phenomenon has a name, puberty syndrome, and it always seems to find Sakuta first.