>>89313466She willingly hosted Niji's infamous black stream, a smear piece on Selen Tatsuki, the most respected and beloved female talent they had at the time, who had just been terminated after attempting to kill herself due to neglect, bullying, and mismanagement.
On top of that, there's circumstantial evidence of favoritism due to leaks showing that Elira was often used to settle internal disputes, and the fact that she got a disproportionate amount of merch and promotions to the rest of the branch. (She had around 3-4x as many merch drops/events as her wavemate Pomu Rainpuff, and her "sister" Selen, who were by far the top performing girls at the time.)
On top of this, Mint's (Pomu Rainpuff, her old "best friend" in Niji) been pretty open about the few nijis she's still in touch with by joking around with their PLs, mentioning them casually, etc. but she seems to have stopped talking about Elira altogether and immediately changed the subject the few times she's ever brought up.