The step dad is definitely the victim here he was groomed by the ML mother they did it and he had to marry the ML mother wayy before he graduated because the ML might have been his son i don't remember if it was proven that the ML is his son or not, the ML mother and father divorced and the ML blamed his step father thinking it's his fault for their family to split so he rapes him and that's why he turned into a perv and ig after the ML mother and step father went their separate ways she finds a lover but guess what he's also a cock loving perv and the ML used to peek at his mother and stepfather doing the deed like wtf and if I'm not wrong the ML had a crush from his high school days who kinda looks like MC and the whole point of this manga is the ML likes people who resembles his dog like literally if u guy's read the manga where we get to read about the step father you'll see there are instances where his dog is shown when his stepfather licks his feet and all
The step dad is definitely the victim here he was groomed by the ML mother they did it and he had to marry the ML mother wayy before he graduated because the ML might have been his son i don't remember if it was proven that the ML is his son or not, the ML mother and father divorced and the ML blamed his step father thinking it's his fault for their family to split so he rapes him and that's why he turned into a perv and ig after the ML mother and step father went their separate ways she finds a lover but guess what he's also a cock loving perv and the ML used to peek at his mother and stepfather doing the deed like wtf and if I'm not wrong the ML had a crush from his high school days who kinda looks like MC and the whole point of this manga is the ML likes people who resembles his dog like literally if u guy's read the manga where we get to read about the step father you'll see there are instances where his dog is shown when his stepfather licks his feet and all