This was an interesting episode. The conflict between Yuu and his mom gets fully explored, and it seems like it got solved in the end. Although it was just a side-plot and an excuse to make Haruka discover some of her powers, the creators did a good job into telling this story.
The next episodes will be focused at the main plot again. It was nice to see an intermezzo like this, without any fighting or tension like in the previous episodes. It keeps the anime balanced, I believe.
