Yami ni Kieta Komoriuta
闇に消えた子守唄 · やみ に きえた こもりうた
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
Hushabye, Hushabye... a lullaby of sadness and resentment. In a snowy, cold village, the silence of the villagers and the "voice" in their heads are waiting for Youko. A collection of 4 stories.
Source: AniList
External databases: MADB · AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections