Add the rice and water to a rice cooker and cook.
Spread the cooked rice on a baking sheet and let it cool to room temperature.
While the rice cooks, prepare the ingredients.
Combine the cooled rice with the prepared ingredients in a large bowl.
In a small bowl, mix the Mirin, vegetable oil, toasted sesame oil, rice vinegar, sugar, and salt. Drizzle over the cold rice and mix. Taste and add more salt if necessary. Cover and refrigerate until ready to use.