Start by heating a medium skillet on medium heat. Toss in the zucchini, as well as the gochujang. Give a good stir, and gently mash in the gochujang. Add the water to assist in making a thinner sauce. Continue cooking until the zucchini is heated through, and the sauce coats the zucchini. Toss in the furikake if you desire. This adds that additional distinct flavor that you would find in a standard sushi roll.