The dad was really abusive to both of them, and the mom just left and abandoned hyesung with the dad, so hyesung refused to search her, when he meets Dojin and has byul the mom finds out about it because dojin is like famous, so she goes to look for him but obviously hyesung doesn’t want to see her, which understandable, and dojin kind of forces him into that situation which is insane, and in this story he continued to have contact with the mom without hyesung knowing

Can smone fill me up w the mom son plot cause I don't have the patience to read love is an illusion