Responses
I think they all going after Seonho is simply because he has pretty handsome face and sexy body, other guys are ugly. Won is pretty but he's too strong so Sagang can't have him, and Heesoo was targeted too but Seonho protected him from sexual predators two times, and Shin is pretty too but he was the right hand man of Won (someone strong) so no one were going after him.
I feel like theres gotta be some reasoning behind why everyone is going after Seonho. Like some sort of mutation he got unknowingly?? Like I know this is just pornwha but there /is/ some really interesting world building that occasionally gets sprinkled in between the sex scenes.