Honor student Kisaragi Sarasa, blessed with both beauty and intelligence, pulls down her increasing cravings and nosebleeds as the day approaches. Kira, her younger brother, had been accepted into the same school as her, so she invited him to her room to celebrate, intending to kiss him for the first time. He goes in not suspecting anything, not recognizing this. She climbs on him in her see-through negligee and stares him down with her breasts showing and her eyes full of hunger.