Miso soup with udon noodles

Ingredients

• 1 Nasoya package silken tofu, cut into 1-inch cubes
• 8 cups water
• 6 green onions, green part only, chopped
• 1/2 cup red miso
• 1 shredded nori
• 1 teaspoon sesame oil
• Soy sauce 2 dashes
• 1 box The udon noodles, cooked and drained