Aoba Shunsuke, a transfer student, was the first to arrive at Sunshine School on Foundation Day, a rest day for the institution. Unbeknownst to him, he soon ran into Natsumi, a tall student, who would become a significant part of his life. Shunsuke's family owns a women's apparel business struggling with manpower, so he offers to help out, but his inexperience with customers often gets in the way. Natsumi's assistance at the shop is a welcome relief for Shunsuke's mother.