I thought this volume was one of the funnier ones after a couple very serious volumes with 10 and 11.

We got to see a little about The Handler and how she lives as well as friendly competition between her, Loid and their dogs. As well as Yur interacting with her co-workers. Spy x Family does a good job with side characters that they don't feel completely forgotten and feel like individual from one another. They won't get the same development as the main and secondary characters but it is still nice to see them.

I was delighted to see more Anya, Becky and Damian. Their interactions are always the cutest and funniest. I do appreciate the little fourth wall break and thought that was really funny. Which helped with the funny light hearted tone of the volume.

I thought the last few chapters and the build up was well done. The way the story can so easily transition from chapter to chapter and how different the tones are without being jarring.
Tatsuya Endo has nailed making these cliff hangers. I haven't tired of them yet and they are always well done when we do have them. He has spaced them out really well so you are still engaged and satisfied even when there is no cliff hanger.

I cannot wait to see how volume 13 will start off.