I don't, given the exchange in chapter six. It's possible the 'father' early on was simply faking the emotions of what a father would be. But given the dialogue it seems that he doesn't really have any interest being a father to us. Now, could this be the whole 'old man doesn't care about their son at a certain age' or is he not the real father to us but simply there taking likely paychecks from whoever? I lean towards the latter.
Oddly enough I lean on the former...but that's probably because having a workaholic/distant dad that doesn't really connect well with the son is not that uncommon an occurrence, even in fiction...
/glances at Midoriya's dad from "My Hero Academia" and Tim Hunter's dad from "The Books of Magic"
Also having Orion's dad not be his biological father just opens up the discussion that the Founder could be his real dad...and honestly I'm hoping that theory isn't true, mainly because it'll just make the story some sort of rethread of OIAL (where the main villain
turned out to be a powerful Demon that possessed the MC's father and completely took over his body in the end) and would honestly sour my experience to the whole story overall.
Hell, I'd rather have Orion end up being some sort of "lost test tube experiment from Ulysses" (which was one of my earlier theories that I have long since discarded) than the Founder's kid. That's just how averse I am to the whole damn idea, really.
