A Summer's Accomplice (2025): cast, story & where to watch
2025 · Series · ★ 8
Released in 2025, A Summer's Accomplice is a mystery series.
What it’s about. 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.
Who’s in it. A Summer's Accomplice stars Masaki Hashimoto as Takumi Iwai, Yuri Tsunematsu as Mio Katagiri / MIO / Maki, Riko Nagase as Aina Amase and Ruka Ishikawa as Mona Chikusa, among others.
How it landed. With an audience score of 8.0/10, A Summer's Accomplice sits among the best-reviewed titles in the catalogue.
Where to watch. Streaming options change often. See the full, country-by-country breakdown on our where to watch A Summer's Accomplice page.
If you liked it. Fans of A Summer's Accomplice tend to enjoy Attack on Titan, Stranger Things, House and Riverdale.
Frequently asked
- Where can I watch A Summer's Accomplice (2025)?
- Streaming, rental and purchase options for A Summer's Accomplice change frequently. Check our where-to-watch page for the latest availability in your country.
- Is A Summer's Accomplice worth watching?
- A Summer's Accomplice holds an audience score of 8.0 out of 10, and is a strong pick if you enjoy mystery. Most viewers rate it highly.
- Who stars in A Summer's Accomplice?
- A Summer's Accomplice stars Masaki Hashimoto, Yuri Tsunematsu, Riko Nagase, Ruka Ishikawa and Jyotaro.
- When was A Summer's Accomplice released?
- A Summer's Accomplice was released in 2025.