Episode 17: “You Must Master a Single Thing”
- 17 of 26
- July 27, 2019
- 23 min
- Aired
Contents
| Series | Demon Slayer: Kimetsu no Yaiba |
|---|---|
| Episode | 17 of 26 |
| Original air date | July 27, 2019 |
| Episode length | 23 min |
| Studio | ufotable |
| Previous episode | Episode 16: “Letting Someone Else Go First” |
| Next episode | Episode 18: “A Forged Bond” |
| Streaming | Crunchyroll, Netflix, Hulu |
“You Must Master a Single Thing” is episode 17 of the anime Demon Slayer: Kimetsu no Yaiba. It first aired on July 27, 2019.
Summary
The summary below describes what happens in this episode.
A member of the Twelve Kizuki, directly serving Muzan Kibutsuji, is somewhere on Mount Natagumo. After defeating the Mother Spider Demon, Tanjirou Kamado learns that a demon who may know how to restore Nezuko Kamado’s humanity is in the forest.
Characters in this episode
Music in this episode
- OP 1“Gurenge” — LiSAAnimeThemes
- ED 1“from the edge” — FictionJunction, LiSAAnimeThemes
Where to watch
Streaming services that list Demon Slayer: Kimetsu no Yaiba. What you can watch depends on your country. Acino does not host any video; each link leads to the service's own page.
Episode guide
All 26 episodes → · 19 of 26 episodes have a summary
About the series
The anime follows Tanjiro's journey as he becomes a demon slayer to avenge his family and find a cure for his demon-turned sister. His quest is set in the Taisho Period, adding a historical touch to the dark fantasy storyline. The blend of action, supernatural elements, and emotional depth makes the story distinctive.
Read the article →References
- “Demon Slayer: Kimetsu no Yaiba”. Kitsu. Retrieved October 22, 2026.
- “Kimetsu no Yaiba”. MyAnimeList. Retrieved October 27, 2026.
- “Demon Slayer: Kimetsu no Yaiba”. AnimeThemes. Retrieved October 23, 2026.
Episode titles and air dates come from Kitsu. The summary is written by Acino with AI assistance and checked so that it does not copy other sites.