hi the stories you make are awesome but I was wondering if you could make a story on if Naruto had ki from dragon ball or if Naruto was more like his father
Regarding the Rinnegan, it takes a lot Chakra to use some techniques and also almost perfect Chakra control. Otherwise you might not be able to use it or worse you might suffer physically or mentally
Continues use of Sharingan makes you go blind and might suffer from disease like Itachi, also Sharingan users gets arrogant and too much dependent on their eyes.