This is my male lead prediction.
First of all, Mr. fiancée is DEFINITELY not the male lead. First of all, he's blond. Secondly, being in an arranged marriage with X** is basically a ticket to "no chance" land.
Kang Miro... he's rude. Understandable but IDC. Also he's too scheming. I don't like him.
Gu seokho has a high chance because he's the most sincere and is the first one to realize how kind she is. But this also puts him in the seclead category.
Seol Wonyoung??? He is also giving male lead material. He's the first one to get a chapter dedicated to his pov. He's also the only one who did not have an ulterior motive!! But then!! He just hadddd to confess first...
