After passing the entrance examinations, Sakuta Azusagawa finally enrolls in the same university as his girlfriend, Mai Sakurajima. He slowly acclimates to the new surroundings by attending student events and meeting fresh faces. All appears to progress smoothly until Uzuki Hirokawa, a friend of Sakuta"s and a member of the Sweet Bullet idol group, starts behaving erratically. When fellow Sweet Bullet performer Nodoka Toyohama begs for his assistance, Sakuta discovers he has encountered another instance of the mysterious Puberty Syndrome—Uzuki is overwhelmed by a sudden rise in popularity and whispers about a possible solo venture. While Sakuta seeks a remedy, another manifestation of Puberty Syndrome gradually surfaces from the shadows.
