Break noodles into medium pieces. Place into a deep dish and cover with hot tap water. Soak for 10 minutes.

Meanwhile, whisk boiling water, soy sauce, and brown sugar together in a 2-cup liquid measure.

Drain noodles and transfer to a bowl. Pour soy mixture over top and soak for 2 minutes.

Heat oil in a large skillet over medium heat. Add noodles and soy sauce mixture. Cook and stir until hot, about 5 minutes.

Transfer noodles and sauce to serving bowls. Garnish with sesame seeds.