Rem acts as his greater emotional support, allowing what is anordinary person to continue in the face of the rbd despair. A compilation of evidence that emilia's mother is minerva. Emilia was frozen when she was 7, not 15.
She's beautiful but looks wise sophie turner is on whole another level. But there's the usual issues with emilia mother theories, such as emilia being 115 while minerva died 400. For example in arc 6 when he indeed breaks his shell and cries infront off emilia and his from zero moment with emilia takes place.
Let's be honest, emilia only looked good in first few seasons of game of. I think emilia would have woken subaru in that case. Additionally, emilia claimed in the wn that the name minerva made her nostalgic. And because subaru doesn't seem to confront.
This is just a list i made of every piece of information or fact supporting this theory, and it is not supposed to be. Her mental age is 14, which includes the six years she spent in elior forest with puck and the single year she was at roswaal's mansion before. Satella being future emilia is the most lazy theory ever. Emilia could be satella's twin, her clone, or her doppelganger.
If i had to come up with a theory on why emilia was gone, i'd guess that satella manifested in the temple and was feeling jealous with. Love emilia but her looks are overrated af. That becomes a failed loop hence emilia. Nowhere in the anime has it been stated that emilia is.
Emilia is currently his goal, due to his initial dying wish, to save emilia. Emilia is taking far longer than it should to answer subaru's confession because she thinks it's ok.