学園ベビーシッターズ

After their parents die in a plane crash, high schooler Ryuichi Kashima and his toddler brother Kotaro are taken in by Yoko Morinomiya, the chairwoman of Morinomiya Academy. The condition is that Ryuichi help run the school's daycare in exchange for housing and tuition. He looks after a handful of small children there alongside Kotaro, among them the temperamental Taka Kamitani, while learning to be both a student and the only parent his little brother has left.