The King of Darkness, Koumi, reconfirms his intentions in front of the Kaiun Tower. That ambition is to kiss Meirin on the lips and make the power of the light shrine maiden his own. He also wants to break the seal of the Dark Demon. Unaware of her brother's intentions, Meirin treats Koumi as usual. Suddenly, the roof of Koumi's room collapses under the weight of the snow. Koumi, who has to study for his exams, starts living alone in an apartment near the Kaiun Tower. When Koumi is left alone with Meirin in the apartment, he tries to get close to her...