And there is no indication that he didn't. You think after Selen, there wouldn't be one single voice piping up if something was wrong?
You think if this was happening against his will, people who know him or he himself would keep quiet right now?
I get that there are reasons to believe the statements coming from Niji and Niji-affiliated channels might be untrustworthy, but what motive does someone who isn't beholden to Niji like Kuro or Hakka have to lie about what is happening?
what did Hakka says.
Kuro only says "He is physically well", "Noose anime picture", "he is the sweetest guy I know"
You think after Selen, there wouldn't be one single voice piping up if something was wrong?
Did you not remember how the Selen debacle turned out? Her mama and friends wasn't able to reach her and Selen went completely radio silent. They didn't speak out against nijisanji for "what nijisanji did". They speak out against Nijisanji for "not letting them contacting Selen"
Two entirely different situation here. I do believe if Nijisanji cut all communication between Ike & Kuro, Kuro would speak out against Nijisanji like RPR did.
Likely Ike signed an NDA saying he cannot divulge the actual reason behind his "Graduation" to Kuro & Hakka (or anyone really). And he acted accordingly to the NDA he signed, he never told Kuro & Hakka why exactly he "graduates", he only told the two "It was mutual" "I'd like to go off the internet for the time being" and "still doing fine physically". Kuro & Hakka themselves should know better than pressing more info from people when they don't want to say things, even more so for someone who says they are currently unwell mentally.
Heck we even had Shu came out and said he had no idea about the graduation or why Ike's graduating. I'm trusting his word here, not the opposite.
Your entire argument is based on "His friend didn't say anything and Nijisanji don't do NDA anymore after Selen." and my argument is "why couldn't he even hand sign something as significant as a graduation letter because that is clearly copy pasted".
There is a chance Ike himself might actually saw nothing too wrong with the letter they wrote to disavow it to his friend. He already don't want to deal with the internet right now. But that doesn't dismiss the letter being skinwalked.
If he is too lazy to sign his graduation letters, just don't copy paste and noone'd care if the "hand signature" is missing. The vtuber industry standard is black text on white black ground with 0 signature, the signature being there is unnecessary in the first place. I personally think the manager tried to make it seems like Ike wrote it by copy pasting it in.