Very normal of course, I love it in either direction. I do think it comes easier to Reigen, but not necessarily more naturally.

I feel like Reigen is very aware what he does, while I see Mob as a bit clueless about kinks etc in general. Though, clueless ≠ all around naive. He's aware what he likes, but often not aware his preferences are unique and personal & not just what sex is always like for everyone. So he might not recognize kinks as such.

Anyway, Mob does cock worship without being aware, is what I'm saying. Reigen might just unassumingly exist in his underwear & Mob finds himself wanting to feel the outline of his dick through the fabric. Feeling him up being the desire itself, not thinking of sex first & foremost. Still he usually has the decency not to just do that (though he might lose some of that decency in later years). He sucks Reigen's dick with fascinated focus, I think. Less looking for Reigen's face and more for the twitching of his erection or his pulse against his tongue; many kisses in between, nuzzling against it with his lips and face, crotch-cuddling ... he probably smells him, too. Or maybe I just want him to give blowjobs like that. ╮⁠(⁠.⁠ ⁠❛⁠ ⁠ᴗ⁠ ⁠❛⁠.⁠)⁠╭

I don't imagine him to be very body-worshippy as a whole, like I imagine Reigen to be, but I'm firmly in the "Reigen's forearms are boner-inducing" camp & I think Mob is weaker to it than anyone else. He likes to caress them and just feel the muscle & tendons & his hair. Same goes for Reigen's legs, to a lesser degree. I think Mob is in an inbetween of wanting muscle for himself and just being attracted to fit male bodies & Reigen's arms are surely the most well-trained part of his & stay so even when he inevitable grows a belly pouch someday.

I also think they both are tit guys & flat chest is just a different flavor of tit (to me & I'll be projecting) & I think they both like to grope and squeeze nipples. And I think they both like it being done to them. #equality