When Kusano doesn't feel like she is being accepted as one of Minato's wives she says she wants to join the shopping races with Tsukiumi and Musubi. However, rather than going straight there she goes the wrong direction. After Musubi redirects Kusano, Kusano gets sidetracked by a cat. After using the cat to get to the store Kusano forgets what she is actually shopping for. So rather than it being a race, it becomes an experience that draws Kusano, Musubi, and Tsukiumi closer together.
Kusano's first errand was better than I was expecting. It was fun to see how Musubi and Tsukiumi help Kusano. I had honestly thought that the three of them would go straight to the store. Surprisingly, this episode didn't have fan service for the majority of it. There is a bath scene at the very end though. Overall it was pretty wholesome. If you liked Sekirei Season 1, I would definitely suggest giving this Special episode a try.