Sawako finds a lost puppy and Kazehaya decides to take him in. The class seats are shuffled and Sawako learns that she might have more friends than she first thought.
Season: 1
Prologue
Kuronuma Sawako is often misunderstood and feared by others for resembling a horror movie character. She enters her new high school hoping that she can make new friends. Her chance comes when she volunteers to be a ghost for a school activity.
New Mission
As Tanjiro and the others are devoted to their rehabilitation training, the absolute master of the demons, Muzan Kibutsuji, gathers the Lower Ranks of the Twelve Kizuki. The demons, too, are preparing to make their next move. As training draws to a close, Tanjiro has improved to the point where he can fight on equal terms with Kanao. Just then, he receives word of a new mission from his Kasugai Crow.
Tsuguko, Kanao Tsuyuri
Tanjiro, who's undergoing rehabilitation training at the Butterfly Mansion, works hard to keep up his Total Concentration Breathing techniques all day long. Though at first, he's helpless against Kanao, a swordswoman in his class who's training him, he slowly but surely begins to make some headway. Seeing Tanjiro devote himself to training every single day, Zenitsu and Inosuke resume training as well, but…