Am I missing something? The comments are all talking about a past life but I don't remember it being mentioned. Are we assuming or is this based off of a novel?
It is hinted. All over the beginning of the manhwa. The seme knows when Sejin would supposedly betray him and how, he knows Sejin’s heats, and he knows what Sejin wants without Sejin specifying them. I think there was a visual hint too.
Damn the development in this was so good and they're so cute