I think Ten-ten has already destroyed one of kakazu's masks with the SoSP's fan, the one silver-gold brothers were using.Shikamaru and Ino are facing off against Kakuzu along with the Konoha gatekeepers (I always forget their names) and Kakuzu is extending his arms but hasn't absorbed his remaining masks
umm kushina said that was the symbol of the eddy villag from the land of whirlpools and that the eddy and leaf village were very clos because the 1 hokage and the uzumaki clan(originated from the eddy village) were distant relatives and the leaf shinobi where it on their uniforms to symbol friendship and good faith even after the eddy village and the land of whirlpool was invaded and destroyed lol you shouldve payed more attention to the manga :flaw: but i forgive youPage 16, Gen-san really needs to lose some weight :3
BTW, I don't really remember, but naruto has both in the arm and back a symbol like a swirl. I dun remember if it has anything to do with the Senju, but you can see Iruka has the exact same symbol on his left arm too.