@Echonic According to the translation she was half-asleep, and in that world it's probably safer to kill your opponent then risk checking their intentions and becoming enslaved to them.
... I don't think "propeht"/"prophecy" is anywhere near being an accurate descriptor for the kind of magic that Aizen/Eisen is using here.
Pfffttt, I love how the spirit did a double take on page 19 upon recognizing who is speaking to her.
... Wait, the spirit world has movies??? And there's a spirit emperor?! And... why is he calling Aizen "Otisu"?
Also, page 8 misspells MC's name as "Aitsu". And page 11's last panel incorrectly uses the third person instead of the first person.
@StLL: I believe he was talking about when he did his heroics; it was after that that he went to the spirit world and lived there until now. Also, nothing says that he travelled everywhere in the spirit world.