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Spatial Awareness.
Normally, this refers to being aware of one's surroundings even though there are constant changes and movements. It's not quite similar to an eidetic memory, since even though the person who has a decent spatial awareness could tell if something was out of place even without looking. People who has this talent usually excels at archery, take Anne for example.
That being said, there are also varying qualities of this talent. What the Elves - Tenrou and now Raven inherited is probably the highest quality of Spatial Awareness.
Raven's perspective of the world changed. Though he cannot see it nor interact with it for now, he is aware of the new existence around him - well, not really new since space had always been there but he could sense it with more clarity now.