It looks like the top forcefully marked him I mean the uke is literally not in his right mind how could he ahhhhh. Obviously we all know that he was tryna get him preggo but wasn't expecting him to mark him too.
Spoiler alert:....Yes he totally did in the novel, it's not just the pills he kept giving Yumin drugs but also the herb during dinner.
It looks like the top forcefully marked him I mean the uke is literally not in his right mind how could he ahhhhh. Obviously we all know that he was tryna get him preggo but wasn't expecting him to mark him too.