This is a story about a fake mistress and her daughter. The reason why it is done in the name of youth is because the daughter has a smart mind and a beautiful face, which is exactly in line with the orientation of the young male protagonist.
However, don't get me wrong, the heroine is not the real mistress's daughter. When her mother came up with this idea and started to implement it, the hero had nipped this possibility in the cradle.
So why is the young male protagonist called a devil? Because he brought the heroine and her mother to his home with the intention of flirting with her, and played the role that the mistress and daughter feared most, that is, the son of the main wife, so he pushed and pulled the heroine in various ways and had various ambiguities in the days to come.
Of course, our heroine is relatively honest. Although she knows her own advantages, she has never thought of taking advantage of them. She has always done what she should do, being an outstanding academic at school and a mute at home. Since her mother can have both sides, she plans to get out of this family turmoil.
But, poor heroine, do you think the hero will let you go like this...