A summary of what’s going on in this scene:
Riko is the yakisoba store manager, everyone else are waitresses and chefs
Izuki is making the customers distressed with puns; “Would you like yakisoba beside me (soba de)?”
Customer asked for no red ginger (benishouga); Izuki: That’s a pity (shouga nai)
Hyuuga takes over, but he gives samurai names to the order menu (he wanted to have a samurai-themed yakisoba house wearing armors)
Koganei greets customers like they were at a fish market (RASSHAI RASSHAI)
Koganei realizes he should be more in character then speaks with a high pitched voice, mimicking Riko (audio clip click me)
He goes on to take orders, but he gets distracted by the delicious menu and ends up ordering for the customer instead. Tsuchida tells Mitobe to take over
Mitobe takes the customer’s order, but with a lot of awkward silence because Mitobe only nodded
Tsuchida gives up and takes over
Furihata and Fukuda are laughing hard at Kawahara because he’s bald in a maid’s outfit. Kawahara says he’ll grow some hair
Furihata is nervous about serving people, but the freshmen reassure him, “It’s just like basketball! The food is the ball, and the tables are the hoop!” and they get really into it, passing the food around the restaurant (Furihata accidentally burns a customer)
Kawahara says he wants to try cooking, but he doesn’t know how to, and Kiyoshi tells him that it’s fine—he has no idea what he’s doing either, but his yakisoba tastes good and it seems that he has an innate sense for cooking
Despite what he’s wearing, customers still don’t notice Kuroko
After surprising a few customers by “appearing suddenly,” Kuroko just leaves the food on the table and stops announcing himself (“Since when did the food get here?”)
Kagami is the main chef, and Kuroko is giving him good assistance by adding ingredients to the pan
Riko wants to help too, but is stopped when she tries to put protein supplements into the food
At the end, customers gave in satisfactory surveys and said they had a good time at the yakisoba house
They said everyone was very cute, especially Riko who the customers thought was a guy
Riko is furious and everyone is scared about going back to practice because Coach will double or triple their training