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.
Seasons and episodes
1 season · 12 episodes
S1 E1Episode 1
Oct 4, 202523 min
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!
S1 E2Episode 2
Oct 11, 202523 min
"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!
S1 E3Episode 3
Oct 18, 202523 min
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..
S1 E4Episode 4
Oct 25, 202523 min
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...!?
S1 E5Episode 5
Nov 1, 202523 min
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 clo
S1 E6Episode 6
Nov 8, 202523 min
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.
Starring
Frequently asked questions
- Where can I watch A Summer's Accomplice?
- A Summer's Accomplice is not currently listed on a streaming service in the US. Use the country picker on the page to check other markets.
- How many seasons of A Summer's Accomplice are there?
- A Summer's Accomplice has 1 season and 12 episodes. Status: Ended.
- Will there be a new season of A Summer's Accomplice?
- A Summer's Accomplice has ended; no new episodes are scheduled. The final episode aired on December 20, 2025.
- Who stars in A Summer's Accomplice?
- A Summer's Accomplice stars Masaki Hashimoto, Yuri Tsunematsu, Riko Nagase, Ruka Ishikawa, Jyotaro.
