Scheming ML/innocent FL

The Male Leads in these dramas are determined to be in a relationship with the FL, and they're ready to scheme and manipulate her for that goal. In contrast, the FL is quite naive/innocent and falls in his traps. 

He's different from the domineering alpha type because he uses ruse instead of force. He can be rich or poor, strong or cute, he gets what he wants with his big brains.