thank you for your interest and attempt! the password is a mix of knowledge about the vtubers in question.
If I refer to the instructions in the information sheet: first, _ _ _ (three letters that is the common abbreviation of their unit name) and _ _ _ _ (4 digit numerical abbreviation for their company) , combined it will be _ _ _ _ _ _ _ 7 characters total. sorry for the trouble, but this is the last hint I will give as vtuber RPS is a bit more sensitive on the JP side of things :,) hope you understand.