

Promise we'll remain a secret, forever.
Upon being sent to live with relatives in the countryside due to an illness, an emotionally distant adolescent girl becomes obsessed with an abandoned mansion and infatuated with a girl who lives there - a girl who may or may not be real.
AnimationDramaFamilyfriendshipbased on novel or bookimaginary friendflashbackphotographcalmanimepersonal diarypsychological
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Cast
- Sara TakatsukiAnna Sasaki (voice)
- Kasumi ArimuraMarnie (voice)
- Nanako MatsushimaYoriko Sasaki (voice)
- Susumu TerajimaKiyomasa Oiwa (voice)
- Toshie NegishiSetsu Oiwa (voice)
- Ryoko MoriyamaElderly Lady (voice)
- Kazuko YoshiyukiNanny (voice)
- Hitomi KurokiHisako (voice)
- Hiroyuki MorisakiArt Teacher (voice)
- Takuma OtooNeighborhood Association Officer (voice)
Crew
- Hiromasa YonebayashiDirector
- Masashi AndoScreenplay
- Keiko NiwaScreenplay
- Hiromasa YonebayashiScreenplay
- Joan G. RobinsonNovel
- Atsushi OkuiDirector of Photography
- Takatsugu MuramatsuOriginal Music Composer
- Rie MatsubaraEditor
- Koji HoshinoProducer
- Yoshiaki NishimuraProducer
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