Demon Slayer: Kimetsu no Yaiba › Unwavering Resolve Arc

S1 E21: 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...

Air date	Aug 24, 2019
Runtime	23 minutes
TMDB rating	★ 8.1/10