here's my rrat:
matsuri hates rushia because hachama went to rushia live instead of her birthday
Every time matsuri meets rushia in dance room, matsuri is mean to and rape rushia (they are idols and have weekly dance sessions)
Because rushia is a mentally ill, she decided to leak the holomems irl info to all the dramatuber including korekore and narukami
Rushia mfmf yabai happened, and the disclosure of company information was exposed
got fired


Conclusion:
Aqua is innocent