So basically this is just a comedic commentary dialogue of Sakura and Shiro. They shortly talk about the movie and casually break the 4th wall with their questions. I love how Sakura can show how thirsty she really is for Shiro and its as she says a damn shame that some content was cut from the anime (so go read the manga). The battles are short and are references to Fate/Stay Night so you can actually see this as a 4th route of Shiro along with a piece of Zero (cus of Kiritsugu). The animation is just half decent with the same quality of the previous seasons. All inall just a short to be watched after the movie and to be enjoyed by (hardcore) Fate/ fans