I forgot to mention that while we were waiting for lunch, this really kakkoii lady came and gave everyone some snacks since it was lunch time and we had been waiting for over an hour. She looked a lot like Aiba's but I wasn't expecting his mother to be around, or even to go out and give food to the people standing in line, so we just thanked her.
When we got back and lined up again, waiting for them to call for us, I heard the girl behind us say, "look, it's his mother." We looked in the window and saw that she was pointing at the woman we saw earlier! Ah, so that kakkoii lady was Aiba's mom after all.
Their service was fast, and the food was pretty okay. Maybe because I'm from a place where we have pretty incredible food, so it was hard to be impressed in that area? I'm very impressed with their service and crowd control, though!