In anime, sometimes the heroes find themselves falling for the purported antagonists of the show. These examples are the proof.
Hero team captain falls in love with leader of villain group seeking world domination
14 Anime Shows To Watch If You Love My Hero Academia
Would anyone be interested in a Villain!AU MHA RP? I had an idea where EraserMight has a daughter who possibly falls for a hero in training. - iFunny Brazil
Banpresto - My Hero Academia - Dabi vol. 7, Bandai Spirits The Evil Villains Figure : Everything Else
Top 10 Best Anime Where the Hero fall in Love with Villain
Does anyone know any anime where the Villain falls in love with the hero? (Or the other way around) : r/anime
Heroes, Step Aside: Anime's Top 10 Villain Icons!
Hero team captain falls in love with leader of villain group seeking world domination
Anime where the mc falls for the antagonist - Forums
Top 20 Anime Where The Villain Wins