The story
- English · derived fromfairy
- Japanese · borrowed fromフェアリー系
- English todayfairy kei
From Japanese フェアリー系 (fearī-kei, literally “fairy style”), from フェアリー (fearī, “fairy”) (itself from English fairy) + 系 (kei, “style”).
Etymology from Wiktionary, CC BY-SA 4.0.