Mkay lol so my dumbass was reading this and then BOOM. I figured out that Felix got Isaac pregnant 3 years ago while Isaac got the first heat his medicine couldn’t control in that flashback. Neither of them remembers because Isaac was hazed and dazed so he didn’t remember, and it’s been 3 years so since Felix didnt see his face he didn’t think anything of it. They couldn’t eat because he recognized his smell even if he forgot but that in itself couldn’t just been for the sake of the plot. Anyway, I think and let me put emphasis on THINK that Felix is the one hunting Isaac because he knotted in him and doesn’t want the child to mess with his work but again he doesn’t remember it’s Isaac he’s hunting and Isaac probably doesn’t want their baby to have anything to do with his birth father because he was never there. As their relationship builds they probably won’t realize they’ve been running and chasing after each other this whole time without realizing it until they’ve developed feeling for each other. There could be a plot twist where it’s some crazy ex or something hunting Isaac but I don’t mind whatever direction the story goes. *just a theory*
Its a pretty common theory to come by though! When i first read this manhwa i thought Felix was the one pursuing Isaac too, until i realized if that were true he wouldn’t be willing to use Felix’s security. Plus he specifically pointed out if Felix could find benjamin that easily, so could “they”.
Without spoiling, we should already know that Isaac knows who Felix is (in ch 2 that was Isaac’s flashback, felix’s right hand man points out that Isaac recognized him, the artist didn’t depict this very well but Felix could not see Isaac’s face because it was dark). Its obvi Felix is the father.
The real plot is the person pursuing Isaac and Isaac and Felix’s relationship.
I literally just figured out the entire plot on accident lol reply if you wanna hear my theory.