Demon Slayer: Kimetsu no Yaiba - Season 1 - Eps 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...
About Demon Slayer: Kimetsu no Yaiba

Title: Demon Slayer: Kimetsu no Yaiba
First Air Date: 2019-04-06
Last Air Date: 2024-06-30
Status: Ended
Rating: 8.653/10 (from 6600 votes)
Language: JA
Seasons: 6
Total Episodes: 63
Network: Fuji TV Gunma TV Tokyo MX BS11 Tokai Television Broadcasting Kansai TV Tochigi TV Fukui TV Hokkaido Cultural Broadcasting Iwate Menkoi Television TOS Sendai Television SAGA TV Ishikawa TV TNC OHK Kochi Sun Sun Broadcasting Television Shin Hiroshima System TV Shizuoka UMK TV Miyazaki NST NBS Sakuranbo TV TSK Ehime Broadcasting KTS Fukushima TV NIB AKT Toyama Television TV Kumamoto Okinawa Television Broadcasting
Genres: Animation, Action & Adventure, Sci-Fi & Fantasy
Production Companies: ufotable, Aniplex, Shueisha
Synopsis
It is the Taisho Period in Japan. Tanjiro, a kindhearted boy who sells charcoal for a living, finds his family slaughtered by a demon. To make matters worse, his younger sister Nezuko, the sole survivor, has been transformed into a demon herself. Though devastated by this grim reality, Tanjiro resolves to become a “demon slayer” so that he can turn his sister back into a human, and kill the demon that massacred his family.
Cast

Natsuki Hanae
Tanjiro Kamado (voice)

Akari Kito
Nezuko Kamado (voice)

Hiro Shimono
Zenitsu Agatsuma (voice)

Yoshitsugu Matsuoka
Inosuke Hashibira (voice)

Nobuhiko Okamoto
Genya Shinazugawa (voice)

Takahiro Sakurai
Giyu Tomioka (voice)