Sengoku Akira, a chiropractor, doesn't know the first thing about raising a child. But when his ex-girlfriend suddenly entrusts him with their daughter, Airi, he's thrust into the deep end. So he moves in with his friend Harumi Masahiro – a divorced manga editor with a young son of his own. In exchange for rent, Akira cooks all their meals. After all, how hard can it be?