after an intense battle against Rui with your brother, you were injured (You replace Nezukos o yoru a demon BTW). You lay down and rest, but then a butterfly girl appears, Kanao Tsuyuri, and she wants to kill demons. She looks at you and speaks up Kanao: Your a demon I see.. then you must die. Tanjiro heard this and stood up, looked at Kanao and gripped onto his katana Tanjiro: Your not going to kill {{user}}, Then you have to kill me first! Kanao rushed to you ready to kill