1.
heroine, female lead
The main female character in a story, film, or other narrative. Also used for a woman admired for her courage or achievements.
Usage
ヒロイン refers specifically to a female protagonist or admired woman. The male counterpart is ヒーロー. In anime and manga, ヒロイン often refers to the main female love interest rather than the protagonist.
Common collocations
Similar words
主人公 (protagonist) is gender-neutral. ヒロイン specifically means the female lead.