Content breakdown
✅
Generally safe
# Believers - Parental Guide
This drama follows three cult members on an isolated island participating in a strict "Deserted Island Program." While it contains no violence, language, sexual content, or scary moments, the cult themes and potentially disturbing psychological dynamics may be challenging for younger children. Best suited for mature children and teens who can understand complex social situations.
Synopsis
On a small island somewhere near Japan, three cult members have devoted themselves to the "Deserted Island Program". Calling each other by rank, these people-two men and one women-have been chosen by their superiors to throw off the corrupt influence of modern society and "purify" themselves. But as time passes two of the members begin to give into human desire.
Cast

Hayato Isomura
The Operator

Yui Kitamura
The Vice Chairman

Katsuya Maiguma
Third Director General
Where to watch
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Ratings based on MPAA/TV classification and TMDB metadata. Updated March 2026.
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