i have a variety of contradictory wittebros thoughts that don't fully work together...there's like two versions of the wittebanes in my head. one is a version where they're biological siblings, and the other is a version where they're adoptive found family siblings. i definitely think that they're orphans in both versions, though...if they're biologically related, caleb takes over as the parental figure when their parents die while philip is still a toddler. if they're adoptive siblings, they're from two different families with no parents and caleb discovers philip one day in the forest or something and takes this creepy kid in because he can relate to him. in the version where they're biologically related, philip is definitely an annoying mommy's boy lmao. i think caleb probably had pressure put on him from a young age, whether that be from his parents or by the fact that he had to raise philip by himself, because of how he clearly wanted to passively run away from his problems in the demon realm. i think the brothers generally got along well most of the time, but philip definitely has some rose-tinted glasses on with those hollow mind pictures if the more sickly-looking depressed caleb in the thanks to them mirror scene is any indication...they were pretty typical kids of the time period who were close at first but grew apart as they got older (partially due to their age gap) and philip couldn't deal with that as well as caleb could. i think what we've had implied to us by the hollow mind pictures isn't a fully accurate picture of their childhoods and relationship, and there was more pre-existing conflict between the two of them in the human realm that philip has tried to erase from his mind.