yeah oops slight backstory during hidden inventory arc miju was a first year and developed a close brother/sister-like bond with geto,,, and then all that stuff happened… so after when geto goes to start his cult thing, miju comes with him but their ideals are different now, with geto wanting to kill all non-sorcerers, and miju still believing she is in service to them and it’s her job to save everyone from curses as a sorcerer with their clashing mindsets they become estranged and geto is cold towards her this leads to miju leaving the cult around the start of jjk zero time period and heading overseas to escape the memories of her growth in japan she spends a few months travelling around and comes back, meeting up with gojo and shoko to start teaching at tokyo jjhigh. with her being overseas and all she did not learn of geto’s death and the news had to be broken to her gutwrenching reaction obviously this means she also took quite a big impact from kenjaku using getos body or whatnot peak or nah????? laughing face emoji anyways this is while she’s still in the cult