Case closed at curfew time with 門限

Kanji Explanation: Boundaries and limits with 限

After finding evidence of a UFO encounter, the group Colors sets out to find aliens. The case is cut short when the 5PM bell chimes, signalling that the young trio has to head home for the day.

斎藤(さいとう):: 「ああ門限(もんげん)か。ゲームオーバーだな」; “Ah, curfew time? I suppose it's Game Over.”; Literal: “Ah, is it curfew? It's game over, then.”

Key Points

1門限(もんげん) = curfew / the time you have to be home by

門限(もんげん) refers to a fixed cutoff time for coming home, so here it means the girls have reached the point where they have to head back.
The 限 part keeps the core idea of a limit or boundary, specifically a time limit on staying out.

Vocabulary

門限 (Curfew)

門限(もんげん) refers to the “specified time by which one must return home from being out” or the “time when gates or entrances are closed”, typically at night. Curfews are established in homes, student dormitories, hotels, and other settings for the purposes of crime prevention and lifestyle guidance.