Kain will be seeing Rosa as his ghost in the event! Rosa is his unrequited love interest, so he'll do anything, anything at all, to protect even a fake manifestation of her. In fact, the more solid she becomes, the happier he'll be, even at the cost of his own life force. Eventually, Kain may also basically "kidnap" her to stash her away somewhere for safe keeping, in order to prevent anyone from killing her. He won't be able to kill her either... which of course means he'll die by the end of the event. Fun fun!

Also... if anyone wants to be there when he dies, that would be great!