Yeong is messed up beyond.
No amount of therapy can fix that. 
The guilt of his forbidden desires for his best friend, being tricked easy into fuc**** a demon followed by being possessed by him. Nah, that's a lot to deal with 
Considering the intense nosebleed and heightened sexual aggression, it was evident how much he desired his friend, but was at the same time shameful for feeling that way. That's just sad 
✿FujoShe✿