I'm really loving the art style in this. It's so cute and kind of dorky and awkward at the same time, especially Koharu and her big ol' ears.
(and instructor-lady is still super hot)
I love this artist's Kyouko and Nue, they're so adorable. There's a nice little extra bit to this story on the artist's pixiv showing Nue's first meeting with Kyouko and the little echo-puppy's hair cut.