yeah, easily worked towards 2 fodders.Probably Shinra Tensei or Soul Suck
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likely sucked their souls.He either sucked their souls or went apeshit when he blanked out until they died.
yes, highly possible, he didn't know any jutsu.I think he just used simple Rinnegan rage fueled taijutsu, he didn't know any jutsu back then.
yes probably, he just screamed and fainted.It went blank and when he came too they were dead. HE probably removed their souls