so basically the tea is that ex-guitarist Ame is claiming that even after he left, the band is using his music without his permission and with no credit and he also alleges that Gokigen threatened him in a recent Twitcast stream. Because of this, he wants the band to disband.
Gokigen posted his own rebuttal with receipts of DMs between him and Ame going back to February when Ame left the band just days before they were to hold his birthday live, hence why they changed it to a mini-oneman so abruptly. The only thing I can gather from this is that he had tried to contact Ame, but was blocked, and soon was unblocked so that they could confront each other, and then he was blocked again. Both parties are considering legal action.