Hina nurtures unreciprocated love for her childhood companion, Yakumo, who exhibits behavior akin to that of an overprotective mother hen. While she enjoys being fawned over by her crush, being treated like a daughter is unbearable for her. Hina strives to transform their relationship into a romantic one; however, Yakumo's tendency to be overprotective seems to hinder her efforts. Thus, commences the love story of a steadfast, ardent lover and a watchful, perhaps overly-protective, Yakumo.