Akari's Links
She liked him a lot and was left quite heartbroken when it ended. A small part of her will always be grateful for the time they spent together, but a larger, more intelligent part says "oof, dodged a bullet there."
Uno adored Akari for the time being, finding her to be cute, he always had a partial interest to those closer to his kind. While he was affectionate, he never loved her, and when she in turn starting showing signs of feeling more for him than just some mutual interest Uno left her.
As always he never provided an explanation as he can't be assed to.