SHUSAI is the main dish and FUKUSAI is the side dish.
GOHAN is the staple food and cooked dishes are called OKAZU.
SHUSAI is the main dish using meat or fish as a main menu.
FUKUSAI is the side dish to add the taste and nutrition for the main dish.
You can choose two dishes from the different recipes.

SHUSAI
Fish - Raw fish, Grilled fish, Cooked fish and Fried fish.
Meat - Grilled meat, Cooked meat and Fried meat.
These are for taking the protein.

FUKUSAI
Vegetables - Simmered dishes, Marinated dishes and Boiled vegetable with dressing.
Fish and meat are used as a side dish. Legumes, Tofu and Seaweed are used as well.