The power of music.With summer vacation right around the corner, Sousuke invites Yuzuru, Ai, and Kaoru to form a band with him for the school festival. Though Yuzuru is hesitant at first, he quickly warms up to the idea of trying something new with his friends. But it soon becomes clear that Sousuke is interested in more than just making memories...he wants Risa to play bass, something she swears she will never do again. Risa's past, Sousuke's determination, and Yuzuru's desire to communicate all clash as yet another regret comes to light. Can these boys reach her when words fail?