Yeah let’s not forget even if ppl like them together or don’t like them. He’s still will kill a bitch quick like 1st chapter for supposedly lying. Let’s not forget he did forcefully have sex with NK so why ppl shocked by a slap that’s the least he’s done. Context, history, etc of words
I mean, if Seungho didn't slap Nakyum it would be out of character, it's consistent writing.