E15. Goodbye, Irie-kun

Naoki started seeing Sahoko with the intention of getting married, and on the other hand Kotoko starts dating Kinnosuke. Her date with Kinnosuke is more fun than she expects, but Kotoko's heart still yearns for Naoki. One day, Shigeo says to Kotoko that they must leave the Irie home, so as to not get in the way of the wedding. Tears well up in Kotoko's eyes, as she realizes the time has finally come to give up her feelings for Naoki.