I'm going to be redoing this story.
Why? Partially because I want to, and partially because I will be able to make better use of the two different series better now that new information has been revealed in DxD.

What will stay the same.
Naruto being his canon strength (AKA - Far Stronger Than DxD)
Naruto not involving himself in the affairs of non-humans without good reason.
Naruto training those who need to be trained.

What will be different.
Naruto's partner (NOT sexual, but instead somebody else immortal that will keep him company) will be his daughter.
The method Naruto and Himawari became immortal will be something different as well.
The island used to train his future students will be changed up.
Naruto's training methods.

Finally, the biggest change of all.
Himawari trying to get her father to find a new love.