In my story :
Kasumi is the daughter of the Yondaime Hokage Senju Namikaze Minato & the Godaime Hokage Uzumaki Uchiha Yûki Kushina. She is the imouto (little sister of Naruto) and the Heiress of their clans.
Kasumi is with Naruto the Jinchûriki of Kyûbi she possessed the Yin part of the Chakra. Like Naruto, she has a lot of Kekkei Genkai, but also the five natural affinities. Her primary ones are Katon, Futon, Doton and Suiton. She can use the Hiraishin no jutsu thanks to her Suiton capabilities.
She is a Bukijutsu, Ninjutsu, Taijutsu, Genjutsu, Iryo Ninjutsu, Fuinjutsu Mistress. She's also a specialist in seduction, where she use every tool to accomplish the mission, she can be dominating, submitting, or switch, but she has only one rule : Nobody except the only man she loves most than her own life can touch her without losing his manhood or hands.
when she was only 8, some members of the Uchiha clan by orders of Uchiha Fugaku, try to teach her a lesson that nobody is superior to the Uchiha and everybody need to bow to them, these madmen try to rape her but they were slaughtered by Naruto whom for the first time use the Kyûbi Chakra before they did that. It is one of the reason why the Uchiha Clan was killed by Itachi whom consider Naruto and Kasumi like his own siblings.
Like Naruto whom have the Sharingan, Mangekyo Sharingan Eternal and the Rinnegan, Kasumi too except instead the Rinnegan she has the Kamigan