The miniseries is lighthearted and 3 min per episode is the perfect time to take one concept and turn it into a funny and interesting mini episode. In my opinion, the humor from the mini series actually exceeds that from the main series, and without the problems dragging the main series down (namely, overfocus on the somewhat boring plot), the mini series focused more on having a good plot and showcasing its characters. That being said, I think it might be hard to enjoy this series without watching the main series first. Since you also see some different parts of the character that you don’tnormally see, for example, the “transition phase” Rikka from episode 2 was very fun to watch.