None of our servers carry episode 13 of Arifureta: From Commonplace to World's Strongest right now — it may be announced but not yet released, or listed under a different numbering. The episodes below do play.
When a classroom of students is transported to another world to act as its saviors, Hajime Nagumo finds himself the weakest link. As his friends and classmates are granted strong classes and impressive abilities due to their existing skills, he is given the weak title of Synergist. When a dungeon quest leaves him separated from his group, Hajime must discover his own talents or be left to rot in this world forever. (Source: Seven Seas Entertainment)