レアアイテム

noun

rare item; unusual item

Common in gaming and collecting contexts for items with low drop rates or limited availability; also used more broadly for anything scarce or hard to find.

• このゲームでレアアイテムを手てに入いれるのはとても難むずかしい。

  Getting rare items in this game is very difficult.

• 彼かれのコレクションには