After the death of her parents and losing her home, aloof and deadpan Shiro begrudgingly inherits their old cafe. As you would expect, getting a café back up and running is a lot for just one sixteen-year-old to handle.

Luckily, she has a guardian angel named Yuu to help her out! Despite looking sophisticated and proper at first glance, Yuu is a little airheaded at times and there's a lot she still doesn't understand about humans...however, that's not going to stop her from trying her best!

Take a peek into the lives of Shiro and Yuu as they deal with running a café and the tribulations of daily life.