鬱うつエンド

noun

depressing ending

Internet slang for a story ending (especially in video games, anime, or manga) that leaves the audience feeling sad, empty, or emotionally heavy.

• あのゲームは鬱うつエンドだから、クリアした後あとしばらく落おち込こんだ。

  That game has a depressing ending, so I felt down for a while after clearing it.