How to Build a Secret Base
ひみつきちのつくりかた
Synopsis
When 50-year-old Kenichi and his childhood friends reunite at the funeral of their classmate, they decide to bring a long-forgotten dream back to life—the "secret base construction plan" they'd drawn up as kids. They have just six days that summer to build their hideout without cars, electric tools or smartphones. Rediscovering the spirit of their youth, the men throw themselves into the challenge with all their hearts. Still, they are unable to escape the struggles they face as adults.
Top Cast
Explore Star Directory →
Release History & Theatrical Window
Terra di Siena International Film Festival
Festival / Special Debut
Key Information & Fast Facts
- Director
- Tomoya Itabashi
- Original Title
- ひみつきちのつくりかた
- Country of Origin
- Japan
- Spoken Languages
- Japanese
- Runtime
- 1h 49m
Creative Leadership & Key Crew
Tomoya Itabashi
Department Leadership Roster
Tomoya Itabashi
Director
Production Stills & Gallery
Official cinematic photography and background stills for How to Build a Secret Base.
More Like How to Build a Secret Base
Recommended titles matching themes, cast, and genres.
Frequently Asked Questions About How to Build a Secret Base
Quick factual answers about cast, synopsis, director, box office, and release information.
What is How to Build a Secret Base about?
When 50-year-old Kenichi and his childhood friends reunite at the funeral of their classmate, they decide to bring a long-forgotten dream back to life—the "secret base construction plan" they'd drawn up as kids. They have just six days that summer to build their hideout without cars, electric tools or smartphones. Rediscovering the spirit of their youth, the men throw themselves into the challenge with all their hearts. Still, they are unable to escape the struggles they face as adults.
Who directed How to Build a Secret Base?
How to Build a Secret Base was directed by Tomoya Itabashi.
Who stars in How to Build a Secret Base?
The principal cast of How to Build a Secret Base includes Hiromasa Hirosue, Takehiko Fujita, Kozo Sato, Takao Mori, Hibiki Kidera.
When was How to Build a Secret Base released and how long is it?
How to Build a Secret Base was released in 2025 with a total runtime of 1h 49m.