Setsuna Hanabi (2026): Cast, Story and Release Details

Prepared by Movies Dock Editorial

Setsuna Hanabi is a 2026 action drama centered on five boys during the final stretch of summer. As youthful warmth gives way to difficult realities, the film explores change, fleeting happiness and a life-or-death struggle against a crime-related backdrop.

Setsuna Hanabi is a 2026 film directed by Woogie Kim. Blending action, drama, crime and music, it follows five boys during the closing days of summer, when the comfort of youth begins to feel temporary.

The film’s premise places fleeting happiness alongside danger and uncertainty. With a one-hour runtime and a cast that includes Yeonjun, Beomgyu, Soobin, Huening Kai and Taehyun, it presents a concise coming-of-age story shaped by conflict and change.

Setsuna Hanabi movie details

Story without spoilers

During the last stretch of summer, five boys find themselves confronting the gap between youthful warmth and the knowledge that beautiful moments do not last forever. Their circumstances are connected to a dangerous struggle involving crime and violence, giving the story an action-driven edge alongside its coming-of-age concerns.

The supplied synopsis keeps the boys’ individual situations and the full nature of the conflict undisclosed. What is clear is that Setsuna Hanabi pairs the emotions of a fading season with a high-stakes confrontation, asking why happiness can feel out of reach even when it seems possible for everyone else.

What to expect

Setsuna Hanabi combines action, drama, crime and music rather than presenting a coming-of-age story as a purely reflective youth drama. The listed keywords point to fighting, a life-or-death struggle and a Japanese drama setting, while the premise emphasizes impermanence, emotional transition and the final days of summer.

At one hour, the film is structured as a compact experience. Viewers can expect its youth-focused premise to exist alongside criminal danger, with the central tension coming from the contrast between temporary happiness and serious consequences.

Cast and creative team

Woogie Kim directs Setsuna Hanabi. The credited cast includes Yeonjun as Self, Beomgyu as Self, Soobin as Self, Huening Kai as Self and Taehyun as Self. Heesang Yoo, Sejung Kim, Yoonhong Seok and Joohyung Lee are credited as Yakuza, while Junho Kim is credited as Illegal Debt Collectors.

No writers are listed in the supplied credits. The cast and roles indicate a mix of self-presenting performers and characters connected to the film’s crime storyline.

• Yeonjun as Self
• Beomgyu as Self
• Soobin as Self
• Huening Kai as Self
• Taehyun as Self
• Heesang Yoo as Yakuza
• Sejung Kim as Yakuza
• Yoonhong Seok as Yakuza
• Joohyung Lee as Yakuza
• Junho Kim as Illegal Debt Collectors

Release and production context

Setsuna Hanabi is listed as released on August 16, 2026, with a runtime of one hour. The supplied data identifies it as a 2026 title and lists Big Hit Entertainment, Mother Media and Bighit Music as its production companies.

The genre and keyword information places the film within action, drama, crime and music, with a coming-of-age focus. No country or spoken language is specified in the supplied metadata.

Production companies: Big Hit Entertainment, Mother Media, Bighit Music

Movies Dock view

Setsuna Hanabi brings together a short runtime, a five-boy coming-of-age premise and a dangerous crime-related conflict. Its story is framed around the emotional end of summer and the realization that happiness and beauty can be temporary, while the credited cast and production companies provide the film’s broader context.

Film data:
TMDB