Eagle: HE WAKES UP. It takes a while but he DOES, and then he, Lantis and Hikaru get married and have two kids and they live happily ever after.
Kamui: If he survives, after a looooooooooong time (and lots of therapy) I see him getting together with Keiichi. He'd try to be something that works more with animals and less with humans.
Yuuko: ... for what it's worthy, I'm pretty sure she'll reincarnate and Wata will get to know her new incarnation?