Two former introverted classmates who secretly loved each other meet again at their coming-of-age ceremony. Mei Miyajima admits that she came because she wanted him to see her, and they slip away to have sex while she is still dressed in her formal kimono. Later, each becomes jealous watching the other flirt with someone else at the reunion. After calling their parents with an excuse for staying out, they finally give in completely and fuck again and again until morning, stopping only when they run out of condoms.