Demon Slayer: Kimetsu no Yaiba - S01E05 - "My Own Steel"

Tanjiro continues fighting the demons at the mountain, asking them for a method to turn a demon into a human again, though none answer. Tanjiro and three others end up passing the exam, all of whom are assigned the lowest of 10 ranks.

Tanjiro returns to the cabin and reunites with Nezuko, who has awoken from her year-and-a-half long slumber.