Sakura, feeling her own weakness, go off in search of an ancient relic.
Sasuke, in an attempt to further his ambitions, finds a pair of earrings with mystical properties and gives Naruto one as a sign of "friendship"
Kakashi and Tsunande get married and have kids.
And now for the end result.
1. Sakura finds a scepter with the following words inscribe on them. "Moon Prisim Power!" Upon saying them she instantaneous becomes a vulomptious schoolgirl and there is peace in Konoha since all the ninja of the world are too busy oogling her.
2 Sauske punches Naruto in the gut while saying "Fusion, Ha!" and they become the unbeatabl entity known as Sausuto.
3. They hve 3 large breasted babbies with a pension for laziness and an addiction to pr0n.
Epic win.
A fusion between sasuke and naruto would really be unbeatable. Especially once they reach their peak.
So lets see.
Super chakra + EMS super jutsus= Unlimited use of EMS super jutsus without chakra drain.
Sagemode super speed and strength + Sharingan sight powers= Ultimate taijutsu user
Really powerful long range fire jutsus+ Toad summonings= well that's just a good combo. You can easily attack while remaining on your summoning, and making combo attacks with your summon. Also Sage tech would increase fire jutsus so that they could actually do damage
Shadow Clones + Sharingan= Super enhancement of learning. Shadow clones multiply the amount of experience you get, and sharingan copies others so you automatically get the experience they already got, which is again multiplied by shadow clones. This means that he can create like a circle with 2000 clones, have each activate sharingan, and each clone gets their own experience when training plus all other 2000, then multiply that by the 2000 clones and you get like 4 000 000 times the experience.
3 elements plus advanced spacial recomposition= Probably creating several super strong element combinations, most likely involving a shadow clone. Includes other elemental variations of rasengan. As well as elemental fusions, like an electric fire, or a fire jutsu fed by a wind element jutsu. Also with the advanced 4 million times xp, he could probably even copy kekkei genkeis without having the kekkei genkeis, and like fuse to create new elements, and also obtain all the other elements.
Summoning army= Snakes and toads working together, and could probably create some cool combos
Tell me if you can think of something else. Oh and also with lightning element(which next to pure chakra blasts, most closely resembles dbz type attacks), combined with Narutos super large reservoir of chakra, he could probably use even stronger DBZ type attacks(even though he already has been shown to do this with Giant ball rasengan)