Log Horizon, Vol. 11 (light novel)

Completely lost, Krusty finds himself with nothing to do in the enchanting lands of the Chinese server. As it happens, Kanami and her party are also nearby, hoping to explore the Sirius Grotto dungeon. However, Elias is deemed "too powerful," which prevents him from entering and participating in the dungeon raid! He begins to harbor doubts about the value of his existence, making him easy prey for Enchantress Youren's manipulations and setting him on a collision course with none other than Krusty!