Sekai no Oto ga Shinai

Chitose is well-liked but lacks personal interests or romantic experience, which frustrates him. After school, he discovers Noiri playing piano in a music room and begins learning cello from him on a sudden impulse. As they spend more time together, Chitose develops feelings for Noiri. However, Noiri appears to be keeping something hidden. The series includes an additional chapter beyond the main story.