Kazuya and Kiriha are challenged and attacked at school by Sunao Sumeragi, who holds a vendetta against Kazuya's mother, and her katana Kotetsu. Later Kiriha tries to comfort Kazuya when he refuses to get up from the futon, when she suddenly turns back to her normal grown form. They are caught in an embarrassing position when Kasumi and Kukuri enter the room.