Can someone please tell me hyesungs back story? Cause i forgot

So his mom hook up with hyesungs dad because she was attracted to him she eventually got pregnant with his baby ( hyesung) so she stayed with him, over the years he's been abusing her and force her in prostitution She left him leaving hyesung with him and he was treating hyesung like shit and abusing him too so then he left and drop out school had no job and stay at friends houses