Every once in a while I will eat a bento from one of the chain places because gosh darn, it is easy to do. Maybe not the healthiest, but it is what it is. Mmm. I love that phrase. Cough.
Anyway. The thing that always got me was that there was spaghetti under my karaage. So I did a little research and found this. Nothing official but the idea that is being said here is that the spaghetti is there to soak up the grease and make the dish look more volumunous.
Another question I found was why do they not sell the spaghetti separately. Someone claiming to have been a manager says that the philosophy of the store is to sell things that go well with rice. An interesting point, if true.