Just mix any cheese that melts out with the sauce. The nori seaweed is really tasty too. This is great for bentos, both for its taste and how it looks.
I love the combination of nori seaweed and cheese.
The cheese does come melting out, but just mix it with the sauce. The cheese is savory on its own, but you can adjust the seasonings to taste!
Enjoy Japanese food around the world.