I just finished it!
I thought the character art style was unique and charming and the stylized backgrounds are dreamy and lovely -- they look like a storybook.
The storyline was cute and did a nice job of establishing the characters' personalities in a short amount of time. I also liked the sort of bittersweet nostalgic life transition theme and thought this came across well. Hunting around the house was pretty fun, too, and was a good way to break up the linear flow.
This might have been omitted due to time limitations of a nanoreno project, but I think background music would enhance this a lot! There's a lot of really good royalty-free music on Incompetech.com that can be used for free with credit to the composer.