With the two locked in the bathroom, Yūya gives Mitsuki his shirt and the two share bits of their past with each other. The result of the talking causes a reaction in Mitsuki that fills up the heart a little. Yüya calls out for help and is answered by Yukina who comes to let them out. Yukina introduces herself to Mitsuki as Yüya's childhood friend causing her to become upset while thinking about it. Later on, Hiyori furious that Yukina is making moves on Yüya warns Mitsuki about it telling her that relationship stress and jealously make the heart's contents on the belt drop faster...