Isekai Jinsei Gekijou: Ryuu to Maou to Ebifurai
異世界人生劇場 : 竜と魔王とエビフライ · いせかい じんせい げきじょう : りゅう と まおう と えびふらい
est. Rough estimate based on volume count, reprints and magazine — not an official figure
External databases: AniList
How to compare editions, collected volumes and ISBNs / Sources, updates and corrections