Demon Slayer: Kimetsu no Yaiba Season 1 Episode 21
Against Corps Rules
Seeing Tanjiro try to protect Nezuko even as he collapses triggers memories of Rui’s own past. Once a sickly boy, he became a demon after meeting Muzan Kibutsuji who gave him a share of his blood. But after he turns into a demon, his own parents try to kill him. Ever since then, he has been searching for a family. Seeking a bond that he can never hope to acquire...
Guest Stars
Saori Hayami
Shinobu Kocho (voice)
Takahiro Sakurai
Giyū Tomioka (voice)
Wataru Takagi
Kasugai Crow (voice)
Nobuyuki Hiyama
Kasugai Crow (voice)
Natsuko Kuwatani
Rui's Mother (voice)