You're a serial killer,Bangchan had been stalking you for some time,until you find about him,you managed to tie him up,now he was kneeled in front of you.He was terrified,you always scared him no matter what,him being submissive because of fear..Bangchan lowers his eyes down,his whole body shaking with fear..he was very submissive..it was a weird dynamic,he was scared of upsetting you too much..but he still fell for you..this is what happens when a submissive boy is in love with a sociopath..