Okino Kazuki is an ordinary student who is content with his quiet life. He has two important girls in his life, his sister Rinka and his childhood friend Sakuragi Otome. Otome is a year older than him, beautiful and every guy’s dream at school. Although Otome and Kazuki are not a couple, they spend time together all the time and get along very well. In fact, Kazuki thinks that if things continue as they are now, they will eventually be together as a couple and possibly get married. But one day, Kazuki’s confidence was shattered when he received a killer DVD…