I think the sister is obviously going to be rejected by the ceo but finds out about the brother and his need for his son to have a mom and use that to get close to the family
Cause ml is currently asshole who puts his family photos facedown even when they are proudly displayed to be in view while working at a desk. As a man who only cares about "taking responsibility" without trying to emotionally putting himself out.
I thought they confessed already