Demon Slayer: Kimetsu no Yaiba
Season 1, Episode 21: Against Corps Rules
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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...
All Episodes - Season 1
Episode 1
Cruelty
Episode 2
Trainer Sakonji Urokodaki
Episode 3
Sabito and Makomo
Episode 4
Final Selection
Episode 5
My Own Steel
Episode 6
Swordsman Accompanying a Demon
Episode 7
Muzan Kibutsuji
Episode 8
The Smell of Enchanting Blood
Episode 9
Temari Demon and Arrow Demon
Episode 10
Together Forever
Episode 11
Tsuzumi Mansion
Episode 12
The Boar Bares Its Fangs, Zenitsu Sleeps
Episode 13
Something More Important Than Life
Episode 14
The House With the Wisteria Family Crest
Episode 15
Mount Natagumo
Episode 16
Letting Someone Else Go First
Episode 17
You Must Master a Single Thing
Episode 18
A Forged Bond
Episode 19
Hinokami
Episode 20
Pretend Family
Episode 21
Against Corps Rules
Episode 22
Master of the Mansion
Episode 23
Hashira Meeting
Episode 24
Rehabilitation Training
Episode 25
Tsuguko, Kanao Tsuyuri
Episode 26
New Mission