

Episode 6: “Promise”
- 6 of 6
- November 11, 2017
- 24 min
- Aired
From Acino, the anime encyclopedia
| Series | Yuki Yuna is a Hero: The Washio Sumi Chapter |
|---|---|
| Episode | 6 of 6 |
| Japanese | やくそく |
| Original air date | November 11, 2017 |
| Episode length | 24 min |
| Studio | Studio Gokumi |
| Previous episode | Episode 5: “Goodbye” |
| Streaming | Prime Video |
“Promise” is episode 6 of the anime Yuki Yuna is a Hero: The Washio Sumi Chapter. It first aired on November 11, 2017.
Summary
A summary of this episode has not been written yet.
Music in this episode
- ED 5“Yakusoku” — Kana Hanazawa (as Nogi Sonoko), Suzuko Mimori (as Washio Sumi)AnimeThemes
Where to watch
Streaming services that list Yuki Yuna is a Hero: The Washio Sumi Chapter. 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
About the series

Yuki Yuna is a Hero: The Washio Sumi ChapterTV series · 2017 · 6 episodes · Studio Gokumi · ★ 7.70
Yuki Yuna is a Hero: The Washio Sumi Chapter is a 2017 Japanese anime television series based on the light novel series. It is animated by Studio Gokumi. It aired from October 7, 2017 to November 11, 2017, with 6 episodes.
Read the article →References
- “Yuki Yuna is a Hero: The Washio Sumi Chapter”. Kitsu. Retrieved October 23, 2026.
- “Yuuki Yuuna wa Yuusha de Aru: Washio Sumi no Shou”. MyAnimeList. Retrieved October 27, 2026.
- “Yuki Yuna is a Hero: The Washio Sumi Chapter”. 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.