I can't believe I forgot to do this (yes, yes I can because my memory is always horrible) but I'm finally here to throw some options to you!

Does it count as immortal if a magical girl canonly revives herself all the time...? I think it does. So maybe we can add Usagi to the list of those, who can touch her???

And Madoka (healing_wish) is from a magical girl timeline, so uh, her body sure isn't a normal human body either for all the cute platonic things maybe?

... Then there's Rumi (denyingit), who is an interesting case of being a half-demon, so if you want even more cute, platonic things, maybe she could be an exception too? Doesn't have to be but could be. :>

Though hey, I will gladly go with any loopholes from any of my girls if you have more ideas / wishes, hahah.