Honestly Naruko might be the play , i think it would be cool, wouldnt even have to change any dialogue except people saying him and change it to her
Wastn what i was thinking , i was thinking just remove Naruto and replace him with Naruko , female Naruto could fit more the comedic harem idea as a harem member. Or you could have it have been Naruko secretly and make it a plot thing where the Mc finds out shes been hiding as a guy. That could be a fun plotline make it something to do with the Kyuubi