i dont think its the rasenshuriken.Rasenshuriken..
Duh
XD
yea i agree whit you.i no something for sore that jutsu is going to kick assyea..i think throughout yondaime's life,he has been trying hard to improve his own techniques and help naruto.He could've sealed the demon fox into himself couldn't he?Furthermore,he knew it would create a lot of danger for naruto to have it inside him but yet he gave him the chakra..I think there's always a motive for wad he do.Wif the naruto's huge chakra,he can learn the rasen shuriken easily...so i dun think it is too..Probable something very good or something he was working on before he died?
Oh.. yeah sorry for being that simple un..i dont think its the rasenshuriken.
how's going to help him complet it?
very good idea.yea its maybe the flying thunder god.it would be awsome to see naruto use that jutsuthis is a lil theory i have. the 4th had the rasengan which was not complete cause he did add his elemental chakra. naruto completed it. also his flying thunder God used tags to teleport far distances. maybe he wanted naruto to complete it and teleport on his own