"Bunny Girl Senpai" is a Japanese anime series based on the light novel "Seishun Buta Yarou wa Bunny Girl Senpai no Yume wo Minai." The story follows Sakuta Azusagawa, a high school student who encounters Mai Sakurajima, a mysterious girl dressed as a bunny. Mai is suffering from a phenomenon called "Adolescence Syndrome," which causes her to become invisible to others. As Sakuta helps Mai navigate her struggles, he discovers that other characters also experience unique manifestations of Adolescence Syndrome. The series explores themes of youth, identity, and the challenges of growing up, blending elements of romance and supernatural drama.