Tenshi no 3P!

A high school student named Kyou often skips school due to past trauma and secretly writes songs using vocal synthesis software. He receives emails from three fifth-grade girls—Jun, who cries easily; Nozomi, who is determined; and Sora, who is sleepy and laid-back. The three, who grew up like sisters, ask Kyou to help them pursue a music career. The series includes six additional short stories.