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Your mom's in a coma and her diary just exposed decades of lies—road trip time!
Mini Series
Watch(JP)

Diary (2018)

emotional excavationsmall-town secretsbittersweet healing

Latest Episode

49 min

Season 1 • Episode 4

Latest

Episode 4

Sep 30, 2018

Overview

FamilyDrama

Miyata Ayaka (Renbutsu Misako), an office worker, sees her world collapse around her when her mother Miyata Harumi (Kikuchi Momoko) collapses due to illness and is left in a coma because of it. She then discovers that her mother kept a secret diary that she writes with her high school friends and that the lies she has told her have become evident, with nothing to lose. Ayaka will travel to Kaga, in Ishikawa Prefecture, her mother's hometown, to try to clarify the truth of the lie in her mother's secret diary.

Flag of JPJPJapanese
Content warning
friendshipmother daughter relationshipromancehospitaltravelcomadiaryoffice workerhometown
maternal mysteryintergenerational woundschosen friendshipidentity reconstruction

Standout Aspects

Acting

Renbutsu Misako's restrained unraveling as truth after truth drops

Cinematography

Kaga's traditional crafts districts shot like memory itself

Writing

Diary entries that reframe everything you thought you knew

Best for:Solo: Solo viewing with tissues and your own family baggage·Streaming: Weekend binge when you need a good cathartic cry·Rewatch: Second watch to catch all the diary timeline clues
Heads up:Emotional: Coma care scenes and parental mortality themes throughout·Triggers: Medical trauma, family estrangement, and discovered infidelity
First AiredSep 9, 2018
StatusEnded

Vibe

Pacesteady
Intensitymedium
Tonemixed
Feelheavy
Seasons1·Episodes4
NHK BS Premium

Top Cast

Misako Renbutsu

Misako Renbutsu

Miyata Ayaka

Momoko Kikuchi

Momoko Kikuchi

Miyata Harumi

Aoi Nakamura

Aoi Nakamura

Hiyama Yuichi

Nene Otsuka

Nene Otsuka

Takano Chinatsu

Mari Hamada

Mari Hamada

Katase Akie

Naomi Nishida

Naomi Nishida

Tanimura Fuyuko

Kohei Otomo

Kohei Otomo

Ishida Shizuo

Yōko Yamamoto

Yōko Yamamoto

Miyata Makiko

Naoto Ogata

Naoto Ogata

Takano Makoto

Momiji Yamamura

Momiji Yamamura

Hiyama Sayuri

Atsuko Anami

Atsuko Anami

Miyata Naomi

Noriko Iriyama

Noriko Iriyama

Hiyama Kyoko

Ask about Diary

Opens AI chat

Deep Dive

Trivia, insights & behind the scenes

Cultural

Kaga Yuzen silk dyeing and Kutani pottery aren't just backdrop—the traditional crafts mirror the series' themes of layers, burning, and permanent transformation.

Insight

Momoko Kikuchi, playing the mother, was a massive 80s idol whose own public image was carefully constructed; casting her as a woman with secret diaries adds metatextual weight to every flashback.

Gallery

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