Is the Order a Rabbit? Manga Volume 4 features story and art by Koi.

It’s already been a year since Cocoa stepped into Rabbit House Café, and she and her friends all go out for tea to celebrate! But when Cocoa starts acting strangely over spring break, Chino and Rize can’t help but worry. As it turns out, Cocoa’s older sister plans to visit...and she has a surprise in store!