１８じゅうはち禁きん

noun

18+ only; R-18; adults only

Indicates content or products restricted to those 18 years or older, similar to an age rating. Common in media, games, and online platforms.

• このゲームは１８禁きんだから、子こどもには買かえない。

  This game is 18+ only, so I can't buy it for children.

• サイトに１８禁きんのマークが表ひょう示じされた。

  An 18+ only mark was displayed on the site.