

Episode 9: “Chaos Theory Homeostasis II”
- 9 of 24
- May 31, 2011
- 24 min
- Aired
Contents
| Series | Steins;Gate |
|---|---|
| Episode | 9 of 24 |
| Japanese | 幻相のホメオスタシス |
| Original air date | May 31, 2011 |
| Episode length | 24 min |
| Studio | White Fox |
| Previous episode | Episode 8: “Chaos Theory Homeostasis I” |
| Next episode | Episode 10: “Chaos Theory Homeostasis III” |
| Streaming | Crunchyroll, Hulu |
“Chaos Theory Homeostasis II” is episode 9 of the anime Steins;Gate. It first aired on May 31, 2011.
Summary
The summary below describes what happens in this episode.
Rumiho Akiha becomes interested in the Mobile Microwave after overhearing Rintarou Okabe and Itaru Hashida discuss it. Rintarou later finds that the IBN-5100 is missing, suggesting that the laboratory never obtained it, possibly because of Moeka Kiryuu’s D-Mail. After learning that the device had been taken from Ruka Urushibara’s shrine, he encounters Moeka, who does not know its whereabouts. Rintarou also discovers that Mayuri Shiina knows Moeka in the new timeline.
Characters in this episode
Music in this episode
- OP 1“Hacking to the Gate” — Kanako ItouAnimeThemes
Where to watch
Streaming services that list Steins;Gate. 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 24 episodes → · 23 of 24 episodes have a summary
About the series

Steins;Gate centers on Rintarou Okabe, a self-styled mad scientist whose experiments lead to an unprecedented discovery about communication across time. Its story combines scientific experimentation, psychological tension, suspense, and the consequences of changing history, while focusing on the relationships among…
Read the article →References
- “Steins;Gate”. Kitsu. Retrieved October 22, 2026.
- “Steins;Gate”. MyAnimeList. Retrieved October 27, 2026.
- “Steins;Gate”. 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.