Hotarubi no Tomoru Koro ni
蛍火の灯る頃に · ほたるび の ともる ころ に
est. Rough estimate based on volume count, reprints and magazine — not an official figure
Overview
It's July 2016, and the Tadamura family gathers in the Hirasaka village for the funeral of the grandmother and head of the family: the young man Yukito, his step-sister Yue, his father Masashi, his uncles Nobuteru and Tsunemasa, and his cousins Terumi and Teruya, all come to pay their last respects. But on that evening, Yue witnesses an incomprehensible scene: the grandmother's dead body starts to move and disappears into the night! The morning after, the family wakes up in a strange world, seemingly cut off from reality, where two suns shine… (Source: Batoto)
Source: AniList
Synopsis 日本語
自堕落な生活を送っていた忠村幸人は、祖母の葬儀のために父親の故郷である【平坂村】を訪れることになった。過疎化が進むその村で、幸人は従兄弟や叔父たちと再会する。葬儀が終わり、一段落ついたかと思われたその晩、祖母の遺体が行方不明になる。これは村で起きる【怪異】の序章に過ぎなかった。
Source: Wikipedia「蛍火の灯る頃に」 (CC BY-SA 4.0)
External databases: MADB · AniList · Wikidata
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections