bijuu werent a thing in part 1. kyuubi was just called demon fox and shukaku was a sand spirit. then they were magically living chakra monsters in part 2. it was a big retcon
Do you even know what bijuu means xD Kishi already established that their would be more people Like Naruto plus he needed to have an origin and why the akatsuki would be after naruto and Others like him. Theirs a difference between retconning and adding more to the plot.
shukaku was a sand spirit back then not a bijuu. he was retcon into bijuu later
do you even read the story? so magically old priest knows shukaku is a bijuu in war
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but nobody knew it in part one. they called him an evil monk spirit and never addressed as ichibi and he didnt recognize kyuubi in their fight though that was transformation. OTHERWISE GAARA WOULD HAVE HAD A V1 BUT GUESS WHAT BIJUU WASNT A THING THEN THEY WERE JUST DEMONS not pieces of a big juubi entity made of chakra. same as rasengan being an incomplete jutsu and you dont need to kill your best friend for ms. these are retcons kishi made in the story for changing his mind
bijuu werent a thing in part 1. kyuubi was just called demon fox and shukaku was a sand spirit. then they were magically living chakra monsters in part 2. it was a big retcon
Uh no it wasn't. Akatsuki came to Konoha to kidnap Naruto in part 1. Just because the other jinchurikis weren't revealed in part one doesn't make it a retcon.
Learn 2 find valid data to support your standpoints rather than generalizing and casting them off as dogma when they are not supported. Insulting people doesn't support your objectivity or standpoint either.