Demon Slayer: Kimetsu no Yaiba (2019)

S3E7 Transformation

Fueled by anger over Daki's disregard for human life, Tanjiro fiercely assaults her, gradually pushing her back. However, he soon reaches his physical breaking point. Just as he falls and despair settles in, Nezuko arrives on the scene. A fierce confrontation breaks out, and Nezuko begins to morph into a more demonic version of herself...