I'm preparing two pizza, one for immediate consumption and the other one I want to freeze so it can be eaten next week. Is it OK if I freeze raw pizza I.e. raw dough with all the ingredients? Or should I bake the base for a bit? Or even should I bake two pizzas and freezer one, fully baked or half baked? Pizza would be prepared from instant yeast - dry powder. 
Ajitsuke tamago are likely a culinary descendant of lu dan, Chinese soy sauce marinated eggs. Lu dan are also frequently added to soups, and can be hard or medium boiled. As a very old Asian food, they exist in other Asian cuisines as well, including Korean and Filipino. What's interesting is the lack of marinated, but not pickled, egg recipes from non-Asian cultures.  Every country in Europe has some form of pickled eggs, but savory marinated eggs doesn't seem to be something that Europeans discovered before trade with China. 