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TV series
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Who Is the Sender?

2022 · 1 season

Quietly addictive classroom mystery where anonymous notes slowly peel back teenage secrets, keeping you guessing who wrote what and why.

Created by
Izuru Kumasaka
Genres
Mystery, Drama
Overview
Kuwazuru Mitsuki is a second year student at Arakawa Nishi High School. One day, her homeroom teacher, Tachibana, suddenly announces the start of the "Letter Game", where every student has to write a letter with his/her true feelings to each of the classmates. However, the "letter" will not include the sender's name. At first, there were a lot of bad jokes and silly "letters", but they slowly accelerate to revealing secrets and confessions, which make everyone question, "Who is the sender?" and "Who will be named next?" This game allows the students to become more aware of each other's hidden worries and thoughts, which slowly deepens the bond among the classmates. Meanwhile, Mitsuki tries to search for the sender of the letter sent to her and she discovers a secret hidden in this "letter game".
How it feels
Tense, melancholic, earnest and warm. Measured and needs your attention.
About
Identity, friendship, isolation, sexuality
Content
Mild violence, sexual content and language. No gore.
Note
Written by AI, so it can be wrong. Full breakdown

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In the USNo streaming, rental or purchase options known.
Created by
Izuru Kumasaka
Genres
Mystery, Drama
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How it feels

Written by AI. It can be wrong.

Full breakdown
Tone
Pacing
measured, 2 of 4, from slow-burn to relentless
Attention
engaged, 3 of 4, from background-friendly to demanding
Era
contemporary
Audience
teen
Content intensity
  • Gore none
  • Language mild
  • Violence mild
  • Sex mild
All scales, 0 to 10
Scales, 0 to 10
ScaleValue0 to 10
Action1
Horror1
Humour3
Realism7
Romance4
Tension6
Darkness5
Complexity6
Emotional weight7

Cast

Where to watch in the US

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No streaming, rental or purchase options are known in the US.

Streaming data from JustWatch.TMDB

Details

Genres
mystery, drama
Created by
Izuru Kumasaka
Written by
Atsuki Tomori, Hisako Fujihira, Manato Hamada
Starring
Sara Kouzawa, Kaito Sakurai, Taiyu Fujiwara, Tokio Emoto, Kiita Komagine, Airu Kubozuka, Ryota Miura, Seiko Utsumi
Length
1 seasons, 40 episodes, 15 min each
Network
TBS
Country
Japan
Languages
Japanese

TMDB