Cook one cup of brown rice or white rice according to the package instructions. It should make 2 1/2 - 3 cups when cooked.
While the rice is cooking, prepare the tofu. In a small bowl, whisk together the rice vinegar, agave syrup, tamari or soy sauce, sesame oil, ginger, and garlic. Add the cubed tofu and marinate for 10-15 minutes.
Sprinkle cornstarch over the tofu cubes and toss to coat.
Heat the vegetable oil in a skillet over medium-high heat. Add the tofu cubes and fry until crispy and browned on all sides.
To assemble the bowl, divide the cooked brown rice among 4 bowls. Top each bowl with the cooked tofu, sliced avocado, julienned carrot and cucumber, edamame, pickled ginger, and nori seaweed.
Drizzle the remaining marinade over the bowls and serve immediately.