Angel's 3Piece!

Hibiki Nukui has been a shut-in ever since a traumatic incident, spending his days composing songs with vocal software and sharing them online. One day, he gets an email from a group of fifth-grade girls asking to meet. The trio, who have been inseparable since childhood, want his help to express their gratitude to those who’ve supported them-by organizing a concert at a place that holds special meaning for them.