As the gang show their support to Taichi as he participates in a badminton tournament, Wakana appears to be occupied by the letter she received. The next day, Wakana runs into Sawa's mother, Shiho, who shows her an old photo of Mahiru in high school with Naoko. Remembering how she had often argued with Mahiru over music before her death due to focusing on her exams, Wakana asks her father, who is to go on a short business trip, to get rid of the piano in her room. As Wakana returns home with the piano gone and realizing she is all alone, she recalls the contents of the letter, expressing Mahiru's desire to write songs with her, and soon starts to regret her decision.