Sometimes, you might get bored with the clock style on your phone and you want something different.You can try installing anime style clock applications.
Generally, this app will have an anime girl iterating the current time in Japanese, and you can trigger different reaction from the girl by touching the screen. I believe most of apps also have the alarm clock functionality.
Frankly speaking, I think these kind of apps are just for fun. There is not much practical usage in daily life and it consumes memory and space. But anyway, just for fun.
Here are what I’ve found so far :
1. Mirai Clock
I believe the above apps are utilizing live2D technologies, as you can see in Shizuku Talk.