Loner Life in Another World Novel Volume 13 was written by Shoji Goji with illustrations by Saku Enomaru.

While rescuing his third dungeon emperor, motor-mouthed high school loner Haruka was forced to make the ultimate sacrifice - total self-destruction! All of his cheat Skill techniques are completely on the fritz. To learn to fight with his new body, Haruka takes up a rigorous training regime in a frontier dungeon, much to the worry of his female friends. Even with training, will low-level Haruka beat opponents with cheat Skills without any of his own?