How does Ragna get his jacket and the Blood Scythe back when he goes back to the present?
Also, are "the magical city" and the "0th rune city" the same place?
But in Phase Shift 4, Nirvana led Celica somewhere underground where a copy of Celica sealed her there and took her place in the present, becoming the "Sister" Celica. I'll go check if I can find it in the short stories thread.
nvm it was a speculation...
Well, if it's just the body (AKA Saya) that's immortal, then all we have to do is RIP Izanami out of her,
but if it's Izanami in general, then this is going to be kinda tricky...