I hope that it is indeed Saturn who made both Ginny and Bonney contract this disease, it's the most fitting scenario I see happening
Nika defeating Saturn would liberate not only Bonney and Kuma from Saturn's oppression but it would literally free Bonney from her disease if Nika sends Saturn to magma or whatsoever
That makes way too much sense! Kuma couldnt save Ginny but at least he can save Bonney! Its a way of "making amends" for his failures, even though they werent his fault ofc! That would be extremely poetic! I've wanted to see Luffy, Kizaru or Kuma just yeet Saturn into the ocean and let him drown to death, maybe all 3 of them do it somehow?
Or substitute Kuma for S-Bear if Kuma cant do it for some reason? But Saturn can just gain unstoppable control of the Seraphims too....So it has be to be Kuma to do it then too?
Would be hilarious if Vegapunk just has a spare DF ready and somehow forces Saturn to ingest it and Saturn blows up and dies, so we finally see someone eating 2 DFs and dying too lol. Maybe this could be Usopps big redemption moment? Firing a DF into Saturns mouth?
But I most prefer the idea of Kuma delivering the most karmic, ultimate, brutal ursus shock of all his collected fatigue and pain. I bet thats why Oda had that bubble of his memories lying around too, assuming its still there too? I love the idea he will remove the fatigue and pain from Luffy again like at Thriller Bark but this time he will administer it to Saturn instead.