Synopsis
Teenager Ryuuichi Kashima becomes the sole guardian of his younger brother Kotarou after their parents die in a plane crash. While Ryuuichi keeps a friendly and kind disposition, Kotarou is a quiet toddler who does not fully grasp what has happened. At the funeral, stern academy chairman Youko Morinomiya approaches them and decides to take the brothers in. But there is a catch: in exchange for housing and school enrollment, Ryuuichi must work as the school's babysitter. The academy established a babysitter's club to help female teachers care for their infants, but it is severely understaffed. Now Ryuuichi not only looks after his own little brother but also a group of toddlers, each with their own strong personalities.
