here's another hironaru pegging hcs list that was sitting in my drafts from my other account lol:
they usually prefer missionary, which is difficult at first because of their height differences, but they work it out.
they also prefer to be close together. if it's from behind, then narumi prefers to be pressed with her chest to his back.
after some fumbling, they try having hirotaka on top. narumi actually prefers it like this sometimes, because she likes seeing hirotaka like that above her. likes gripping his hips, running her hands up his sides. she usually sits up to be close to him, to kiss his neck, chest, jaw.
being on top also lets hirotaka discover his more dominant side. especially when narumi's wearing the strap with a saddle base, making her more sensitive to his movements and the feeling of his weight on her.
despite everything that they've done, narumi is incredibly shy to ask him if he wants to try one thing: an ejaculating strap on. not because she thinks he'll be mad/grossed out, but bc she's a bit embarrassed by how much she's thought about it. she blurts it out one night and hirotaka accepts without hesitation.
the first time they use it, narumi tries so hard to hold back. the thought of being able to come inside him at any moment, to fill him up, makes her more turned on than anything, but she wants to control herself. build up both of their pleasure and only do it when the time is right.
hirotaka is NOT helping her, being touchier and more 'forward' than usual, locking his legs behind her back to pull her closer to him, whispering things in her ear like how much he needs her. but, he still respects narumi's wishes and helps her build it up until the timing is right.
when she's close, she basically rutting into him, blabbering things like how good he is, how much she's thought about this, how much she wants to come inside him. hirotaka can't form thoughts anymore, can't say anything, all he can do is hold on tight and suppress his whines and whimpers into her shoulder.
they finally come and narumi, while shaken and barely able to focus, presses the syringe of the strap to come inside of him. she can see how he reacts differently, how his eyes flutter closed and how he bites his lip at the feeling of it.
after they come down, narumi doesn't remove the strap yet, instead laying down on hirotaka's chest. they both want her to stay inside a little longer.
narumi doesn't always come during pegging, but hirotaka almost always offers to eat her out afterwards. she needs it most when the base was rubbing against her just enough to get her riled up (or when she's turned on afterwards in general which is. often).