Start year: 2010
Issues in volume: 1
Proper Japanese Title: かさねの道Originally serialized in Weekly Manga Sunday and published as a single tankobon (which is why the cover for the first issue has no number 1 on it). Years later, new collections were released as digital only (after Weekly Manga Sunday was no longer an ongoing magazine).
Publisher: Jitsugyo no Nihon Sha
Issues in this volume: