Using information explained only in FF7 Remake and nothing else, explain who this character is, what his purpose is, what his role is, why he has the Buster Sword only Cloud has been shown wielding the entire game and why we're seeing him during the climax of the game.
"Oh that's easy his name is Zack because it says so in the subtitles but only with the 'Speaker Name' option turned on"
Ok and? So who is this Zack guy? Again using info ONLY from FF7 Remake and nothing else.
Mind you if you play OG FF7 you get the story that mattes for this "Zack" character in the same game he debuts in, in FF7 Retrilogy his story is now needlessly spread across 3 games over the span of 7 years with some tacked on fanfic level bullshit and as of writing this tweet it still hasn't resolved yet.
FF7 fans who are saying the remake series is not a good entry point are either just purists who hates the whole existence of FF7R or they think the remake series is a sequel to the OG game which is not. I played Remake first and had no problems then went on to play OG.