The phrase "main heroine" refers to the central female character in a story or a film. She is usually the main focus of the plot and plays a heroic role in the narrative. Full definition
After being teased a few years back with a quick clip of the game's main heroine Kat, I couldn't help but wonder: would we be getting a remake of the Vita game on PlayStation 4, or would we be getting a Gravity Rush 2? (egmnow.com)
Toward the end of the book Brill's main heroine burns out and quits her job teaching at a charter school. (mooneyinstitute.org)
Main heroine 2B has access to a pair of load outs with two weapons and assisting Pod that she can swap between mid-combo for a bit more style. (wccftech.com)