>>88239531Mysta held a funeral for himself in Nijisanji. That was his graduation. It seemed out of place at the time, but it made sense after he later rose from the dead as a zombie after joining Vshojo. The dog-like creature elements of his design (such as his collar) also reference Mysta, something he's admitted himself. Matara's debut lore speaks of her "quitting acting" and "leaving at the height of her career".
This sort of thing is very, very common for redebuting vtubers.
Don't cope any more. It's sad to see.