Sekai no Oto ga Shinai
世界の音がしない · せかい の おと が しない
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Chitose is quite popular and yet he has nothing he could get himself into and had no experience of falling in love. This made Chitose annoyed with himself. One day after school, he found Noiri in the music room playing the piano, and decided to learn the cello from him. It was just something that started from a whim, but as they spend time together, Chitose fell for Noiri. But it seems, Noiri is hiding a secret...? Chapter count includes one extra.
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections