A Summer's Accomplice

Name: A Summer's Accomplice
Genre: Mystery
Rating: 8
Cast: Masaki Hashimoto, Yuri Tsunematsu, Riko Nagase, Ruka Ishikawa, Jyotaro

ひと夏の共犯者 (2025)

Seasons: 1, episodes: 12

Episode runtime: 23 min

Mystery

Japan

TV Tokyo

Average rating: 8/10 2

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All about the series

Photo 3

Actors and characters

Photo 3

Production

TV Tokyo, TV TOKYO Production

Premiere

4 October 2025

Last episode

20 December 2025

Status

Completed

Scenario

Yûsuke Moriguchi

Producer

Yusuke Nanba

All team (6)

Actors

Masaki Hashimoto

Takumi Iwai

Yuri Tsunematsu

Mio Katagiri / MIO / Maki

Riko Nagase

Aina Amase

Ruka Ishikawa

Mona Chikusa

Jyotaro

Shota Mizukawa

Amane Uehara

Ema

All actors and roles (6)

Short description

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.