Masamune Tatsumi stood out in the most profound way when he visited the little flower shop run single-handedly by Matsunaga Kai. Flashy and intimidating, he demanded white flowers from Kai. Since his fateful visit, he would often frequent the shop. The two constantly clashed due to Tatsumi's rude and brusque behavior, but as they talked, the tension between them evaporated bit by bit. However, that brief respite is soon destroyed by the cold and calculating Yagami Shirou. He cruelly violates Kai's pure, untouched body… But is it for the reason he originally claimed?