Board Thread:Questions and Answers/@comment-29781768-20171220214633/@comment-4436931-20171228081624

Alukardz wrote: he is summoned at a location where Emilia will show up and the day she was to die by Elsa, hence Satella has some use for Emilia, not necessarily a vessel. but a way to release her.

There's nothing to prove that Subaru would've encountered Emilia at all

however as weak as Emilia is, she has no chance to survive the witch cult let alone reach the tower, which is where the second part of the plan comes in.

Emilia wouldn't have reached the tower with Subaru's help either, they reached it because of the efforts of everyone in the party

that and the part that he has the same scent as Flugel and is from the same world tells me that either Flugel orchestrated his summon at this time or that Satella summoned him and it is for her benefit.

This doesn't prove anything. The smell most likely comes from the authorities and being from the other world doesn't mean anything by itself