Wash enoki mushrooms and onions thoroughly and cut them into bite-sized pieces.
Thinly julienne the carrots as well.
Heat cooking oil in a pan and stir-fry the onions and carrots.
When the onions turn translucent, add the enoki mushrooms and stir-fry together.
Season with soy sauce, sugar, and black pepper.
Spoon the sautéed mixture over the cooked rice.
Finish by drizzling sesame oil and sprinkling sesame seeds on top.