Series synopsis
Playing Sister, also known as お姉ちゃんごっこ is a Japanese animation mystery television series that premiered on YouTube on January 31, 2026. It stars Erika Miyazaki, Isekaijoucho and Arisa Sugimoto.
In the distant future, on the outskirts left behind by the rapid concentration of advanced science and technology in urban areas, lies a remote mountain village known as Kagami Village.
"Behave yourself, or a Double will come for you."
Such old folklore still lingers in this village.
Akane Higure, a middle school student living in Kagami Village, has been eagerly awaiting the return of her older sister, Sui Higure, who is finally being discharged from the hospital after a year.
However, not ...
Premise
In the distant future, on the outskirts left behind by the rapid concentration of advanced science and technology in urban areas, lies a remote mountain village known as Kagami Village.
"Behave yourself, or a Double will come for you."
Such old folklore still lingers in this village.
Akane Higure, a middle school student living in Kagami Village, has been eagerly awaiting the return of her older sister, Sui Higure, who is finally being discharged from the hospital after a year.
However, not long after her sister comes home, Akane receives a single phone call.
"The girl at home with you… isn’t your sister."
Premise: The girl at home with you… isn’t your sister
Cast and characters
Leading cast
- Erika Miyazaki as Akane Higure (voice)
- Isekaijoucho as Sui Higure (voice)
- Arisa Sugimoto as Mari (voice)
Guest cast
- Reina Nagao as Shopkeeper (voice) / Police Officer (voice) / Additional Cast (voice)
- Bandō Ayane as Student A (voice)
- Nemoto Yayoi as Student B (voice)
Episodes
This series spans 1 season with 3 episodes.
| Season | Episodes | First aired | Last aired |
|---|---|---|---|
| Season 1 | 3 | January 31, 2026 | January 31, 2026 |
| Episode | Title | Air date |
|---|---|---|
| 1 |
Phone In the distant future, on the outskirts left behind by the rapid concentration of advanced science and technology in urban areas, lies a remote mountain village known as Kagami Village. “Behave yourself, or a Double will come for you.” Such old folklore still lingers in this village. Akane Higure, a middle school student living in Kagami Village, has been eagerly awaiting the return of her older sister, Sui Higure, who is finally being discharged from the hospital after a year. However, not long after her sister comes home, Akane receives a single phone call. “The girl at home with you… isn’t your sister.” |
January 31, 2026 |
| 2 | Episode 2 | |
| 3 | Episode 3 |
Production
Release
| Original network/platform | YouTube |
|---|---|
| First aired | January 31, 2026 |
| Last aired | January 31, 2026 |
| Runtime | 25 minutes |
| Status | continue |