Cocon (2026): Cast, Story and Release Details

Prepared by Movies Dock Editorial

Cocon is a 13-minute animated film about Koki, a hardworking young Japanese man whose experience in a crowded subway leads him to abandon his job and retreat from the outside world. Written and directed by Inés Sedan, the film is a French production from Caïmans Productions.

Cocon is a short animated film centered on Koki, a young Japanese man whose commitment to his job is abruptly disrupted during a crowded subway ride. The experience prompts a decision that changes the direction of his life.

Written and directed by Inés Sedan, the 13-minute production examines Koki’s withdrawal from work and society through a concise, character-focused premise. The film is produced in France by Caïmans Productions.

Cocon movie details

Story without spoilers

Koki is a young Japanese professional devoted to his work. After an unsettling turning point on a crowded subway, he quits his job and returns home. He then chooses to isolate himself completely, adopting a hikikomori-like existence and refusing to go outside again.

The story follows this dramatic retreat from ordinary life without revealing how Koki’s situation develops. Its brief runtime keeps the focus on one decisive change and the personal consequences suggested by his choice to shut himself away.

What to expect

As an animated short with a 13-minute runtime, Cocon presents a compact story rather than an extended narrative. Its premise is built around social withdrawal, work, isolation and the impact of a sudden experience in a crowded public space.

The supplied information identifies the film as animation and does not provide further details about its visual approach, tone, score or ending. Viewers can therefore expect a focused, economical character premise without assumptions about elements not confirmed by the production information.

Cast and creative team

Inés Sedan wrote and directed Cocon. The credited cast includes Kengo Saïto, Akihiro Nishida and Marie Bouvier. Character assignments are not provided in the available cast information.

• Kengo Saïto
• Akihiro Nishida
• Marie Bouvier

Release and production context

Cocon is a 2026 French animated production from Caïmans Productions. It has a listed release date of September 10, 2026, and runs for 13 minutes. The supplied information does not specify a spoken language.

Production companies: Caïmans Productions

Movies Dock view

Cocon offers a tightly framed animated story about a young worker who responds to a life-changing subway experience by abandoning his job and withdrawing from society. Its short format and clear central premise make Koki’s isolation the defining focus of the film.

Film data:
TMDB