Gu Zhen Ren
It feels like when I have read the author's statement on the last part, I think I know what would FY's end would be... where he had no more options left and he kept on using the cicada on his last battle where every options he chose, every moment where he comes back in time would lead to his death. He just smiles, accepts his destiny and would fight till he dies. Another ending would be he kept on using the cicada and the last time he would use it would be on his last battle where he fails and in the end he self destructed to activate the cicaca but then the cicada dorsnt have much strength left so he will lost on the tides of time, he will be stuck on a limbo forever.
I don't think FY will hate BNB. He isn't a hypocrite like I am allowed to kill u cos i am a tie clansmen and u are supposed to commit suicide by just hearing my name and not even defend urself otherwise ur shameless and despicable.Just like he doesn't feel any remorse or guilt when killing he doesn't feel anger on being betrayed or killed.