Chika and Sayaka were best friends. Sayaka is moving to Germany due to her parents' circumstances, and there are only three days left. The two of them confess their secret feelings to each other, and in the three days they have left, they do what they've never done before, and fulfill the 10 things they want to do together as lovers... They take off work without permission, ride a bicycle together, and kiss each other a lot, feel each other's skin, and desire each other's bodies. They're still high school girls.