The Best Episodes Directed By Ryuichi Hiroki

Episode Rankings

1. #1 Fan Favorite
   

   7.0/10(1 votes)

   #1 - Episode 5

   S1:E512/19/2025

   Anna seemed proud, but she longed for a successor while looking at her mother, in the spotlight for her art book. After the art camp is canceled, Anna invites the boys to the mountain house. She insists she made the Human Specimen. Shiro understands Itaru's hopes to become his father's specimen. The truth of Itaru's death and the mystery of Anna's confession will be unraveled.

   Director:Ryuichi Hiroki

   Writer:N/A

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   Director:Ryuichi Hiroki

   Writer:N/A
2. 

   6.0/10(1 votes)

   #2 - What I Learned From Sleeping With Married Men

   S1:E210/21/2022

   Kana Sato is a university biology teacher. She and Keisuke, a writer, are recently divorced. She spends her days on a dating app meeting married men and has a series of affairs. Struggling with a sexless marriage, Kana engages in casual relationships to learn more about sex and love. Hearing these men’s true feelings, Kana must face what she was hiding from herself.

   Director:Ryuichi Hiroki

   Writer:N/A

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   Director:Ryuichi Hiroki

   Writer:N/A
3. 

   6.0/10(1 votes)

   #3 - Episode 1

   S1:E112/19/2025

   The bodies of young boys were found in six cases. Shiro Sakaki, a professor considered Japan's leading expert on butterflies, turns himself in. He has recorded everything in a report published on the Internet, from his motive to the process of his creation. The interrogation proceeds as if tracing his distorted record, leading to a sensational suspense story where beauty and madness intertwine.

   Director:Ryuichi Hiroki

   Writer:N/A

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   Director:Ryuichi Hiroki

   Writer:N/A
4. 

   6.0/10(1 votes)

   #4 - Episode 2

   S1:E212/19/2025

   Shiro starts to express his artistic viewpoint during interrogation. The art camp is canceled when Rumi falls ill. Shiro goes to the mountain to take the boys home. In the warehouse, there are six cases on display. Shiro feels emotional upheaval due to his expectations toward Itaru. As the detective investigates further, a big mystery arises, and the interrogation gets to the crux of his story.

   Director:Ryuichi Hiroki

   Writer:N/A

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   Director:Ryuichi Hiroki

   Writer:N/A
5. 

   6.0/10(1 votes)

   #5 - Episode 3

   S1:E312/19/2025

   After creating five specimens, Shiro's final target is his beloved son, Itaru. Despite the memories with Itaru, Shiro only sees his son as a butterfly. Shiro makes up his mind to create his last specimen. At last, the report named "Human Specimen by Shiro Sakaki" seems to have ended. However, the letters in the report start to get distorted, and the story shifts to a new perspective.

   Director:Ryuichi Hiroki

   Writer:N/A

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   Director:Ryuichi Hiroki

   Writer:N/A
6. 

   6.0/10(1 votes)

   #6 - Episode 4

   S1:E412/19/2025

   Itaru stays home while Shiro leaves for an observation survey of butterflies. Itaru stares at his father's specimens and invites his friends over. He starts recording his observations in his own report. When Shiro returns, they have dinner and share memories. Shiro opens his son's computer with a strange feeling about the specimens in his room.Three years later, Shiro receives a letter from Anna.

   Director:Ryuichi Hiroki

   Writer:N/A

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   Director:Ryuichi Hiroki

   Writer:N/A
7. 

   3.0/10(2 votes)

   #7 - Episode 1

   S1:E16/2/2016

   Struggling comedian Tokunaga meets intense senior comic Kamiya at a festival and asks to become his apprentice. Kamiya agrees on one condition.

   Director:Ryuichi Hiroki

   Writer:N/A

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   Director:Ryuichi Hiroki

   Writer:N/A