Level 1 kara Hajimaru Shoukan Musou: Ore dake Tsukaeru Ura Dungeon de Subete no Tenseisha o Bucchigiru

The webtoon (long-strip) version.

Official Japanese: [LINE](https://manga.line.me/product/periodic?id=S146690), [ebookJapan](https://ebookjapan.yahoo.co.jp/books/855859)