Honestly, keeping your penis in a jar is the ultimate power move.
If a guy in your life is acting like a douche and goes “what’s the worst you can do to me?”, show him it and go “this was the last guy who did that”
I like how Rentaro stopped Momiji from groping a sumo wrestler not because it was another guy, but because she would hurt her groping muscles if she did
I fear the concept of a genderbent Hakari because if her current libido makes her do everything she's currently doing in the main series imagine what she'd do if she got a penis