Tenshi no 3P!  

Angel`s 3Piece!, tn3p, 천사의 3P!, 天使の3P!, 天使の3P[スリーピース]!, Tenshi no Three Piece!, 天使の3P！〈スリーピース〉

Since starting high school, Kyou Nukui hasn't attended any classes and instead spends most of his time in his room composing music and posting it online with the help of an artist known as Kiriyume. On one occasion, he uploads a new composition called TR03 under the name "me" without including a drawing from Kiriyume. Shortly after, Kyou receives a polite email praising his music and somehow deducing that he is the composer behind TR03. The e-mail also requests a meeting in a nearby park, which Kyou cautiously agrees to. To his surprise, he finds three elementary school girls at the location. These girls, Jun Gotou, Nozomi Momijidani, and Sora Kaneshiro, ask for Kyou's help in organizing a concert at their orphanage, an old church now used as a home. Despite being hesitant at first, Kyou eventually agrees to assist them due to their impressive musical talents. The story is based on the light novel "Tenshi no 3P!" by Sagu Aoyama.