Angel's 3Piece!

Kyou Nukui hasn't been to a single lesson since starting high school. Instead, he spends his days alone in his bedroom creating music that he then posts online along with paintings that are created by his one and only friend, an artist going by the name "Kiriyume." One day, Kyou reluctantly releases TR03, his most recent composition and his first deviation from his usual manner. He uploads under the name "myself" rather than his regular handle "HibikiP" and does not include a drawing from his enigmatic pal. A little while later, Kyou gets a very kind email praising his music and indicating that he is, in fact, the author of TR03. Additionally, a meetup in a nearby park is requested in the email, so he cautiously chooses to go. But to his amazement, he discovers three young elementary school girls there! Suddenly, Jun Gotou, Nozomi Momijidani, and Sora Kaneshiro request his assistance in organizing a performance in their residence, a former church that is now a children's home. And even though Kyou is initially hesitant, he ultimately decides to accept their request after hearing their musical talent.