Episodes are short, about 5 minutes plus OP and ED, except for every 6th or so episode (which I believe aired on Saturdays), which is a much longer episode (~25 min) with more involved plotlines. Instead of a single cohesive story and world, Xiao Lu he Xiao Lan is a collection of many different stories taking place in many different settings. From one episode to the next, it will jump from one story to another. Many of these stories only last a single episode or less, focusing on perhaps a single gag, or a touching moment. But other stories last multiple episodes, but are spread apartin episode order. The thing that unifies the stories is that they all involve some close relationship between the two main characters, Xiao Lu and Xiao Lan.

The short episodes are mostly very lighthearted and comedic, but the long episodes can often bring the waterworks.

An overarching theme is how new technology affects our lives and specifically our relationships, though sometimes there's some supernatural phenomenon that affects relationships. It gets surprisingly philosophical, but the philosophy never gets in the way of the story telling.

Also, it's very gay. Not every story puts them in love with each other, but quite a few do. And since there are many different worlds, you get to see them confess their love over and over. So if you don't like that, this is not for you. But it's super cute, and definitely a big draw for this show. There's no ecchi, it's all very innocent.

It's hard to explain how cohesive this feels, when the structure is so disjoint. You'd think with so many short skits, some of them would fall flat, but actually I can't think of any that did.