Thank you for showing yours to me."
Nanami has the ability to copy any ability she sees, including physical moves, transformations, genetic superpowers, spiritual magic and ninja arts. She cannot copy something she does not have the body parts or equipment for, such as winged flight (unless you also show her how to grow wings) or, idk, mega-stone evolution (unless you find a Nanamite) and she has to be able to see the ability in action to remember it, so passive abilities that cannot be demonstrated (such as immortality or non-obvious ocular powers) are safe provided she isn't prompted to examine the character properly.
That said, if you would prefer Nanami to not copy your character's ability, please say so here. Alternatively, if you'd be okay with her seeing their powers in passing, this is the post for that too. Just fill out this permissions form either way!