The day before a test, Haruka invites Yüto to her home to study. He is amazed to discover the size of the Nogizaka estate where he meets her younger sister, Mika, and two of the Nogizaka household maids, Hazuki Sakurazaka (head maid) and Nanami Nanashiro (third-ranking). The next day at school, a guy bumps into Haruka which spills the contents of her bag and exposes her Comiket catalog. Yüto thanks Haruka for picking 'his' catalog up for him which diverts everyone's attention to him. Even so, Haruka does not come to school for three days...