Cook the rice as per package instructions. Fluff it with a fork, then cool completely to room temp. (Stick it under the fan to speed things up.)
Heat the oil in a large wide pan. Sauté spring onions (white and light greens parts) until softened. Add the garlic and crumble in the tofu with your fingers. Move it around the pan for 2 mins.
Add the kimchi to the pan, then crumble in the stock cubes. Stir, then add the cooled rice, spring onion greens, and toasted sesame oil. Toss to coat everything evenly.
Taste and adjust seasoning. Add the nori strips just before serving.
Serve with a side of sautéed green beans and fried eggs to make it a complete meal.