mentor (2026): Cast, Story and Release Details

Prepared by Movies Dock Editorial

Mentor is a Japanese drama about three lives reshaped by a fireworks accident from fifteen years earlier. As guilt, grief and unresolved responsibility collide, an unexpected reunion forces Ryunosuke, Takumi and Nomoto into a difficult new chapter.

Mentor is a 2026 Japanese drama written and directed by Keisuke Yoshida. Its story centers on the long consequences of a fireworks accident and the uneasy bond between those who caused it and the person who lost everything in its aftermath.

The film brings Hayato Isomura, Seiya Suezawa and Go Ayano together in a story shaped by guilt, grief and moral ambiguity. Rather than presenting a straightforward confrontation, Mentor follows the disturbing emotional shifts that begin when the three central figures meet again.

mentor movie details

Story without spoilers

Fifteen years before the main events, Ryunosuke and Takumi cause an innocent fireworks accident that destroys an apartment building. Nomoto, one of the residents, loses his wife and child and is left with severe burns.

Years later, the two boys have taken very different paths. Ryunosuke attempts to suppress his guilt and maintain an ordinary life, while Takumi remains emotionally tied to what happened. When Nomoto reappears, the reunion does not unfold as expected. His unexpected kindness unsettles Ryunosuke and gives Takumi a fragile feeling of salvation, setting the three on paths that may change their futures permanently.

What to expect

Mentor is grounded in serious drama and moral ambiguity. The premise points to a character-focused story about the lasting effects of guilt, bereavement and responsibility rather than a conventional revenge narrative. The central tension comes from Nomoto’s unexpected behavior and the contrasting ways Ryunosuke and Takumi continue to live with the past.

The film’s emotional focus is likely to remain close to these three individuals as their reunion alters the balance between them. The supplied synopsis establishes a difficult, unsettling situation while leaving the exact direction of their futures open.

Cast and creative team

Hayato Isomura, Seiya Suezawa and Go Ayano lead the cast. Keisuke Yoshida serves as both director and writer, shaping the film’s story of guilt, loss and an extraordinary reunion.

• Hayato Isomura
• Seiya Suezawa
• Go Ayano

Release and production context

Mentor is a 2026 production from Japan, with Japanese as its spoken language. It is scheduled for release on October 16, 2026. The film is listed as a drama and has a reported status of Released, while no runtime is provided. Production companies include avex pictures, SS-kobo and STAR SANDS.

Production companies: avex pictures, SS-kobo, STAR SANDS

Movies Dock view

With its focus on an old tragedy and the complicated consequences of an unexpected reunion, Mentor presents a restrained but serious dramatic premise. Viewers looking for a story built around moral uncertainty and unresolved personal history will find those concerns at the center of the film’s setup.

Film data:
TMDB · IMDb