Where to stream

Who Is the Sender?

7.220221 seasonTV SeriesMysteryDrama

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…

DirectorIzuru Kumasaka

WritersHisako Fujihira·Manato Hamada

ProducersAzusa Hashimoto·Koji Sakuma

Where to watch

Not available in United States

Streaming in 1 other country

Who Is the Sender? isn't on any streaming service in United States right now, but it's available in Japan. Streaming rights are licensed per country.

Seasons & Episodes

Episode 1

Oct 11, 2022

Episode 2

Oct 12, 2022

Episode 3

Oct 13, 2022

Episode 4

Oct 14, 2022

Episode 5

Oct 18, 2022

Episode 6

Oct 19, 2022

Episode 7

Oct 20, 2022

Episode 8

Oct 21, 2022

Episode 9

Oct 25, 2022

E10

Episode 10

Oct 26, 2022

E11

Episode 11

Oct 27, 2022

E12

Episode 12

Oct 28, 2022

E13

Episode 13

Nov 1, 2022

E14

Episode 14

Nov 2, 2022

E15

Episode 15

Nov 3, 2022

E16

Episode 16

Nov 4, 2022

E17

Episode 17

Nov 8, 2022

E18

Episode 18

Nov 9, 2022

E19

Episode 19

Nov 10, 2022

E20

Episode 20

Nov 11, 2022

E21

Episode 21

Nov 15, 2022

E22

Episode 22

Nov 16, 2022

E23

Episode 23

Nov 17, 2022

E24

Episode 24

Nov 18, 2022

E25

Episode 25

Nov 22, 2022

E26

Episode 26

Nov 23, 2022

E27

Episode 27

Nov 24, 2022

E28

Episode 28

Nov 25, 2022

E29

Episode 29

Nov 29, 2022

E30

Episode 30

Nov 30, 2022

E31

Episode 31

Dec 1, 2022

E32

Episode 32

Dec 2, 2022

E33

Episode 33

Dec 6, 2022

E34

Episode 34

Dec 7, 2022

E35

Episode 35

Dec 8, 2022

E36

Episode 36

Dec 9, 2022

E37

Episode 37

Dec 13, 2022

E38

Episode 38

Dec 14, 2022

E39

Episode 39

Dec 15, 2022

E40

Episode 40

Dec 16, 2022

Cast · Directed by Izuru Kumasaka

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Who Is the Sender? — streaming FAQ

Which OTT platform streams Who Is the Sender??

Who Is the Sender? isn't on any streaming service in United States yet, but it's available in Japan. Streaming rights differ by country — switch your country in the header to see where.

Is Who Is the Sender? on Netflix?

No, Who Is the Sender? is not on Netflix in United States as of September 2026.

Is Who Is the Sender? on Amazon Prime Video?

No, Who Is the Sender? isn't on Amazon Prime Video in United States right now.

Where can I watch Who Is the Sender? for free?

Who Is the Sender? isn't streaming in United States yet, so there's no way to watch it free at the moment.

How many seasons are in Who Is the Sender??

Who Is the Sender? has 1 season in total (40 episodes). The series concluded in 2022.

Are all episodes of Who Is the Sender? out yet?

Yes — all 40 episodes across 1 season of Who Is the Sender? are out and available to stream.

Is there a Season 2 of Who Is the Sender??

No — Who Is the Sender? ended after 1 season, so there is no Season 2.