S1E3
Episode 3
お姉ちゃんごっこ
The girl at home with you… isn’t your sister
Continuing
First aired 31/Jan/2026
Japan
Japanese
1 season(s)
3 episode(s)
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."
"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."
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TimeScore
33%
Skip It
Binge Meter
48%
Slow Burn
Episode Pulse
Quiet
40% activity score
Drop Rate
0%
Very Low
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Seasons & Episodes
Browse episodes by season.
Season 1 · Season 1
Season Overview
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S1E2
Episode 2
S1E1
Phone
Summary
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.”
Cast
Main cast members.
Crew
Creators, directors, writers, and production crew.
No Photo
Harumaki Gohan
Background Designer, Director, Editor, Key Animation, Screenplay, Sound
No Photo
Kagen Oyuji
Animation, Background Designer
No Photo
Kuen
Animation, Background Designer
No Photo
ozumikan
Animation, Background Designer
No Photo
Yoshigoi
Background Designer
No Photo
HambaknunTokki
Translator
No Photo
Marco Godano
Translator
No Photo
Mes
Translator
No Photo
Masami Kumakawa
Casting
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山下華鈴
ADR Engineer
No Photo
安江香純
Assistant Sound Engineer
No Photo
滑川高広
Sound Technical Supervisor
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