>>354689951) There's no guarantee this is an "arc," because this could easily just be a recurring gag. Lycanroc is proud of its fur, and it doesn't want it to get dirty. It's probably just a character trait it will have.
2) Even if this were an arc, it technically started at SM047, where Lycanroc lost control of itself before for the same reason. Gladion told Ash that he had to train Lycanroc to not lose control.
3) This isn't worth killing a thread over, especially since it is related to the anime.