The one thing I was missing out when I was in U.S is Flan. It is called Purin in Japan. I purchased the flan called 'royal custard'. It was ranked number one among all flans in convnience stores.
It comes with caramel sauce in a pouch. You pour the sauce on the top of flan before eating.
It was surprisingly soft and silky. Vanilla beans are contained inside the sauce so it has nice flavor of vanilla. It does not taste like the flan I am used to eating though.