taylor hebert finding out that the bijuu can be reasoned with and don't attack unprovoked, and that her new world made enemies of their endbringer-equivalents anyways, is the moment she truly learned to hate hashirama senju.
oh taylor had already been angry at him. watching people in konoha take so much for granted, watching child soldiers be glorified by indoctrinated masses, it made taylor incandescent with righteous fury. and hashirama, as the founder of the village, was definitely not spared that wrath.
taylor had also already learned to hate the elemental countries and whole shinobi system. this entire fucking place was one normalized atrocity after another, and she is not the kind of girl who could look upon such a tableau with only dislike.
but hating hashirama senju specifically, with visceral ferocity, didn't come until later.
upon learning that humanity here could have just left the bijuu alone and how hashirama decided to change that... taylor wants to weep and scream all at once at the fact that this world could have left their fucking endbringers alone. she would have done unspeakable things to give earth bet such a luxury. she is far from alone in that conviction.
yes, madara may have enslaved one of the bijuu first, breaking the shaky neutrality between them and humanity in a way out of hashirama's control, but he was defeated. the kyuubi had been freed. konoha could have had the gratitude of a goddamn endbringer! could have maybe even allied with them! at the least could have had an official non-aggression treaty written up!
but hashirama senju instead decided to enslave the kyuubi all over again, before hunting down each of their siblings to do the same. as a jinchuuriki taylor is now a monument to the shodaime's hubris, an embodiment of the fact that he decided to make humanity an enemy that could spell their downfall.
earth bet would have sacrificed any space program for the simurgh to never leave orbit, would have evacuated any city if behemoth simply slumbered beneath it, would have done anything to never hear those warning sirens again. the idea of rejecting peace with endbringers and instead wronging them in a way that they'd be right to never forgive is anathema to taylor's core.
and so she hates hashirama senju, hates him with the kind of intensity you only get from the pressure at the deepest depths of the ocean.
years later taylor will manage to hijack the enemy's mass resurrection jutsu, successfully bolstering her side with almost every famous shinobi from history. hashirama, as the first hokage, is one of the handful brought to the war table next to her.
if taylor hebert were not a child of earth bet with respect for the truce in her bones, she would have torn off his undead face then and there with her bare fucking hands. it is still a close damn thing, because hashirama is an insult to the very concept that now shields him. hell, grouping him in with them as "enemies I will work with for the greater good" might be an insult to the nazis and serial killers she once faced endbringers alongside.
taylor does it anyways, because with a goddess on their doorstep they need all the help they can get, and she has never been a girl who would value the means over the end result.
humanity wins, eventually. that's not much of a spoiler for this au, of course taylor hebert defeats another deity. and as soon as kaguya is dust, she informs hashirama that she hopes he will rot in hell for the longest possible eternity and that she will ensure he goes down in history as the man who nearly doomed them all, before releasing the technique keeping him on this place of existence.
