I think it’s be much better if they kept the aunt/nephew dynamic and there was a different ML. It feels weird for there to be a romance when she watched him grow up as a baby.
Oh! The first story that comes to mind is that villainess with an hourglass, that girl is badass and mean as hell too. Well she is more like two-faced. I bet you already read it too.
This story makes my heart hurt so good