CALL TO ADVENTURE! Defeating Dungeons with a Skill Board, Volume 2 (CALL TO ADVENTURE! Defeating Dungeons with a Skill Board #6-10)

Haruki might be invisible, but he makes up for it with courage and his secret skill board, which has proven its worth with countless dungeon spoils. While his skills are growing by the day, Karen's have a long way to go. Can Haruki and his skill board help her level up, too?