[ When Kiritsugu comes home, Shirou is hard at work in the kitchen. However, he's not making any kind of meal, at least not yet. He hasn't seen Rin yet today, but he suspects she's going to give him some kind of chocolate. Exactly what kind of chocolate he doesn't know, but he's not going to be caught unprepared. And laid out on the counter are all of the ingredients and utensils he needs to bake a chocolate cake.

When he sees Kiritsugu walk in, he smiles. ]

Welcome home! Your dinner is in a container in the refrigerator. All you have to do is put it in the microwave for two minutes and it will be ready to eat.