Naruto+One Piece Crossover
Naruto's mother kushina was born a tenriyuubito but always hated being one until she fell in love with a pirate named minato
She joined him and together they had a child that is till one day the tenryuubito found out about both of them and sent a buster call to where they and there now 6 year old child lived
You can use this idea I only have this to say
No dark naruto's I mean when it doesn't envolve the tenryuubito or you can have him be like luffy
You have to come up with what part of luffy's crew he would be
Your choice of pairing
No naruto characters (I just kinda feel like it would take from the fun of the onepiece world but hey if you want them to be in there then whatever)