Board Thread:General Discussion/@comment-33063265-20170910144543/@comment-29781768-20170910200427

Satella stated that Subaru is the one that gave Light in her life and that he was the only one that gave her purpose to live.

Surely, this is quite impossible since Satella lived already over 400 years and Subaru just 19 years. There are a lot of theories flying around, but the most implied one is that Subaru is the incarnation of Flugel and that's the reason why she loves him. Flugel is the one that sealed her.

There is also another theory that Subaru and Emilia go back in time and that they start over and become Flugel and Satella. More is yet unknown