noun
gaijin hunter; person who only dates foreigners
Derogatory slang abbreviation of 外国人専門. Used for someone who exclusively pursues romantic or sexual relationships with (non-Asian) foreigners, often implying fetishization or opportunism.
あの子、外専らしいよ。
I hear that girl is a gaijin hunter.
外専って言葉、ネットでよく見るよね。
You often see the term 'gaisen' online, don't you?