So, I did some digging.
Besides this poorly aged picture which people thought it was for Zen
I did notice that:
>Zen removes everything VShojo on March 18th
In the follow-up days, it went
>Mouse removes Zen's VIP (second time this year)
>Henya gets a TTS asking of this to Zen. Which she doesn't know why but same week had a break because the week got too intense.
>Zen puts back everything
>Zen raids Mouse and Henya in the follow up days (she's VIP less by March 21th on Mouse's channel)
https://logs.spanix.team/?channel=ironmouse&username=zentreya
>Mouse puts back the VIP on Zen, literally as she's going live (March 24th)
https://tools.2807.eu/vips?channel=ironmouse
>They collab each other in REPO
>Things go well by May with Zen subscribing to Mouse while saying "tank you for being fren and for sweet birthday messages. hope we play games soon." With Mouse raiding her and then Zen returning the raid later
>enter June and the ER collab.
It's fair to say Zen made the final decision on March too. Things would have gone sweet until that Elden Ring collab, but definitely Mouse was already acting suspicious by the time Zen was deciding to leave, but something made them up, somehow (likely something private) the suspicious increased and turned out to be true on June.