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In-Store Date: 9/22/2026

Based on the prize-winning web novels in Japan! In a time when dungeons and monsters have appeared in our world, a struggling modern adventurer finds a fantasy dungeon–and a special treasure–under his Hokkaido home!Since the discovery of fantastical dungeons all across Earth, slaying monsters and clearing out dungeons has become a popular pastime. Twenty-seven-year-old Karaboshi Haruki dreams of gaining recognition as an adventurer, but he’s got two monstrous problems: he’s socially invisible and has literally no skills at adventuring. When a dungeon suddenly appears in his garage, however, he finds a skill board that allows him to level up faster. The dungeon-diving adventures Haruki has always dreamed of are just getting started!

• Publisher: Seven Seas Entertainment
• Writer: Aki Hagiu
• Artist: Renji Kuriyama
• Pages: 168
• Format: Trade Paperback