Place the rice in a sieve and rinse under water 4-5 times, until the water is clear.
Place the rice and water in a pot and bring to a boil. Once the water is at a rolling boil, put a lid on top and cook for 15 minutes on low heat. Turn off the heat and let it sit for 10 minutes.
In a small saucepan over medium heat, add 250ml (1 cup) red vinegar, monk fruit sweetener, salt, and mirin and Kombu. Once the sweetner and salt are dissolved add 50ml (¼ cup) of the vinegar. Set aside to cool to room temperature.
Place the cooked rice in a wooden tub or a large bowl. Sprinkle 150ml (½ cup) sushi vinegar evenly over the rice while the rice is still hot and mix with a wooden spoon. Cover the rice with a wet tea towel and cool until close to body temperature. Save leftover sushi vinegar for next time.
Place 1-2 tablespoons of rice in a small cup. Spray soy sauce on the rice. Sprinkle some crumbled seaweed on top. Top with thinly sliced fresh seafood or your favorite toppings.