fujoshi; woman who enjoys male-male romance fiction
Slang term for a female fan of boys' love (BL) media, often used self-deprecatingly or within fandom. Derived from a homophone meaning 'rotten girl'.
See also: ボーイズラブ
She's a fujoshi and always reads doujinshi on weekends.
That pairing is popular among fujoshi.
A wordplay on 婦女子 (ふじょし, 'woman, lady') by replacing 婦 with 腐 ('rotten'), implying the woman is 'rotten' because of her interest in male-male romance. The term originated in Japanese internet slang.