Board Thread:Naruto Discussions/@comment-945885-20140709082448/@comment-3279282-20140709093729

Kinda. It actually refers to a four handed performance on the piano, while the Kanji literally mean Party/Gang and Bullet. I don't know why exactly everyone and myself uses combo, sorry.^^

@Omega64: BZ didn't say a total of four people, only "a couple". He also said that two vanished, leaving only one Naruto, so yeah, three in total.