>>106058424God damn it anon, please just get out of that rabbit hole now.
Okay, so essentially, you need the latest Buffer in order for your attackers to even do a smidge of damage.
Problem is, SENA hasn't made that buffer openly available in Banners that only take 5 pulls or so to get, it's just non-guaranteed bullshit hoping that the buffer becomes openly available when the company is delaying the inevitable to penny pinch, I would not recommend to start out on it now.
If you're in it for the story, literally one pull from that uhhhh monsters inc sora banner could let you breeze by no issue.
But please don't go into it deeply, or hell, just fucking go look up cutscenes, that's literally all the story to it.