User blog comment:Uraharattack/Theories and Predictions, NO FAN FICTIONS/@comment-5303512-20150611042256/@comment-7418318-20150613061233

While Yuriy said Zeira was an illusion, that's just his theory. He might be wrong.

The only thing we know for sure at this point is that the real Zeira died, but beyond that it's still open. Illusion, Imaginary Friend, Ghost, non-Human being in disuise... all those are still possible.