Currently, there is no official English dub for the series. It is available in Japanese with English subtitles.
The main perspective often follows a spouse who feels neglected or unfulfilled in their current marriage. The lack of intimacy or emotional connection sets the stage for vulnerability.
The keyword endures because it addresses a fundamental, terrifying truth about modern marriage: Monogamy is a choice that requires daily renewal, and boredom is the silent assassin of passion.