I have to say, I haven't seen Matsuya. (I'm also a fan -- had a number of meals in a Matsuya near Asakusa). But you should be able to find donburi pretty easily

I have to say, I haven't seen Matsuya. (I'm also a fan -- had a number of meals in a Matsuya near Asakusa). But you should be able to find donburi pretty easily in any of the big mall food courts. Oddly enough, Yoshinoya doesn't have much of a presence here, either.