黒歴史

• 読み: くろれきし
• ローマ字: kurorekishi
• 漢字の分解: 黒 (black/dark) + 歴史 (history) → dark history. Inspired by the anime ∀ Gundam where it referred to sealed civilisation history
• 発音: /kɯ.ɾo.ɾe.ki.ɕi/

意味

Dark history — embarrassing past events, phases, or creations that someone desperately wants to forget.

Everyone has their 黒歴史: the cringeworthy poetry you wrote in middle school, the terrible fashion phase, the embarrassing social media posts. The term captures that particular flavour of retrospective cringe when you look back at something you once did seriously and want to erase it from existence. It's most commonly associated with 中二病 (chuunibyou) phases and teenage angst, but adults use it for any embarrassing past moment. The term is almost always used humorously and self-deprecatingly.

例文

1. 中二病時代のポエム、完全に黒歴史。
2. 黒歴史を掘り返すのやめてくれ。
3. あの頃のSNS投稿、黒歴史すぎて全部消した。

使い方ガイド

場面: friends, social media

トーン: embarrassed, humorous

正しい言い方

• 黒歴史なんて誰にでもあるよ。 (Everyone has their dark history.)
• 高校時代のバンド活動、完全に黒歴史。 (My high school band days are total dark history.)

避ける言い方

• 他人の本当につらい過去を「黒歴史」と軽く言うのは無神経 (Casually calling someone's genuinely painful past 'dark history' is insensitive)

よくある間違い

• Using 黒歴史 for genuinely traumatic events — it's meant for embarrassing but harmless past moments, not real trauma
• Not knowing the Gundam anime origin — while not necessary for usage, it's interesting cultural knowledge

起源と歴史

Originally from the anime ∀ガンダム (Turn A Gundam, 1999), where 黒歴史 referred to a sealed, shameful history of civilization. The term was adopted by fans and spread to general usage for personal embarrassing pasts in the 2000s.

文化的背景

時代: 2000s adoption from 1999 Gundam anime

世代: Millennials and Gen Z

社会的背景: Universal informal

地域メモ: Used nationwide. One of the most successful anime-to-mainstream slang crossovers.