Between the voice acting and the animation, this felt more like an short anime than a written story. Kudos for that. Both the art and the voice acting felt amateurish, but that didn't really bother me.
What bothered me was the ending.
I had to look up FFI. I found "fatal familial insomnia", which seems to match the story. Using an uncommon acronym for a disease I've never heard of seems weird and deliberately vague here. Why not spell out the name of the disease?
More to the point, the story feels unresolved. I know that Edgar doesn't have FFI, but I don't know what he does have. I'm not ready to make the mental leap that if Edgar doesn't one specific rare genetic disease that normally affects only much older people, he must have some insignificant condition that'll go away by itself. For all I know, his real condition could be as bad as FFI, with the added bonus of being undiagnosed.