Gochuumon wa Usagi Desu ka??: Dear My Sister  

ご注文はうさぎですか??～Dear My Sister～

Cocoa is visiting her family in the mountains for the first time in a while, as per a letter from her sister Mocha. While her friends will be spending a week without her, Cocoa will have the opportunity to catch up with her loved ones whom she hasn't seen for a while. However, Chino, who considers herself Cocoa's little sister, wants to join her and their friends for the upcoming fireworks festival, which is happening in less than a week. As a result, Cocoa decides to return early so that she can be present for the festival's climax.