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TV series

A Summer's Accomplice

Latest episode

S1 E12

About A Summer's Accomplice

A Summer's Accomplice is a mystery TV series that premiered on TV Tokyo on October 4, 2025. It has 1 season and 12 episodes so far and has ended. The latest episode, Season 1 Episode 12, aired on December 20, 2025.

A devoted university student's idol obsession takes a dark turn when he shelters his wounded celebrity crush after her scandalous romance makes headlines, only to uncover her hidden split personality and suspected involvement in a musician's murder—forcing him to choose between love and truth in a dangerous descent into twisted loyalty.

  • Mystery

Last updated

Episodes

12 episodes · 1 season

Season 1

2025 · 12 episodes · Last episode: 10 months ago

A Summer's Accomplice Season 1 release dates →
  1. A Summer's Accomplice S1 E12 still E12

    12. Episode 12

    Finale

    Takumi and Maki visit the seaside town where Mio was born and raised. The two enjoy a brief moment together, but the police are closing in... What will be the outcome for the two at the end of their escape...?! The final episode is finally here!

  2. A Summer's Accomplice S1 E11 still E11

    11. Episode 11

    The police finally storm in! Takumi (Hashimoto Masaki) and Maki try to escape on a motorbike, but...!? Meanwhile, Aina explains the whole story at the police station...

  3. A Summer's Accomplice S1 E10 still E10

    10. Episode 10

    Mio (Tsunematsu Yuri) watches a video and regains an important memory about the death of her ex-boyfriend Kaito (Asano Junya). Meanwhile, Takumi (Hashimoto Masaki) gets into an argument with Aina over Mio/Maki. Takumi's feelings for Maki grow stronger.

  4. A Summer's Accomplice S1 E9 still E9

    9. Episode 9

    When Mio (Tsunematsu Yuri) wakes up, she sees a man lying next to her covered in blood and panics. Meanwhile, Aina (Nagase Riko) finds out that Mio has another personality, and tells her other personality, Maki, "Give me back Mio, you fake!"

  5. A Summer's Accomplice S1 E8 still E8

    8. Episode 8

    Takumi (Hashimoto Masaki) gradually begins to feel attracted to Maki, who lives with the sadness of Mio (Tsunematsu Yuri). Meanwhile, Miyake (Masaki Reiya), a detective pursuing Mio, happens to cross paths with Maki deep in the mountains.

  6. A Summer's Accomplice S1 E7 still E7

    7. Episode 7

    Takumi (Hashimoto Masaki) has come to Tokyo to retrieve evidence. Mio's (Tsunematsu Yuri) disappearance has caused a big stir in Tokyo, and after meeting his mother at her home, Takumi's heart wavers and he makes a decision. Then, Sajima receives a new visitor...!?

  7. A Summer's Accomplice S1 E6 still E6

    6. Episode 6

    Another personality, Maki, begins to tell Mio (Tsunematsu Yuri) about her tragic past. Takumi (Hashimoto Masaki) decides to go to Tokyo alone to carry out the tasks Maki left undone.

  8. A Summer's Accomplice S1 E5 still E5

    5. Episode 5

    Takumi (Hashimoto Masaki) is visited by his classmate Mizukawa (Jotaro), Mio (Tsunematsu Yuri), and Mona (Ishikawa Ruka), who enjoy a brief summer together by playing in the river and watching fireworks. However, the police are steadily closing in on them...!?

  9. A Summer's Accomplice S1 E4 still E4

    4. Episode 4

    When Maki (Tsunematsu Yuri) asks him a question, Takumi (Hashimoto Masaki) decides to kill his childhood friend Mona (Ishikawa Ruka). He recalls memories from his childhood and is heartbroken, but...!?

  10. A Summer's Accomplice S1 E3 still E3

    3. Episode 3

    Takumi (Hashimoto Masaki) and Mio (Tsunematsu Yuri) are shocked by the arrival of Mona (Ishikawa Ruka), Takumi's childhood friend. They enjoy a fun time at the festival, but at the same time, Mio's disappearance causes a stir in the world...!?

  11. A Summer's Accomplice S1 E2 still E2

    2. Episode 2

    "My beloved idol might be the murderer..." What's more, she has another personality inside her... A suspenseful love story about a man who becomes an accomplice and falls into depravity!

  12. A Summer's Accomplice S1 E1 still E1

    1. Episode 1

    Living together with your favorite idol is like a dream... But she might be a murderer!? A suspenseful love story begins, featuring a man falling into a phantom love and a dangerous, heartbreaking escape!

A Summer's Accomplice FAQ

Will there be new episodes of A Summer's Accomplice?

A Summer's Accomplice has ended, so no new episodes are scheduled. The final episode aired on December 20, 2025.

When did the latest episode of A Summer's Accomplice come out?

The most recent episode of A Summer's Accomplice, Season 1 Episode 12, aired on December 20, 2025.

How many seasons of A Summer's Accomplice are there?

A Summer's Accomplice has 1 season with 12 episodes in total.

When did A Summer's Accomplice first air?

A Summer's Accomplice first aired on TV Tokyo on October 4, 2025.

How do I get notified when new episodes of A Summer's Accomplice are released?

Download the Streambay app, follow A Summer's Accomplice, and you'll get a push notification the moment each new episode is released.

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