In a large bowl, combine soy sauce, sugar, sesame oil, mirin, salt, and pepper. Mix until combined. Add chicken wings and toss to coat. Let the wings marinate for at least 30 minutes.
Heat vegetable oil in a large skillet over medium heat. Add the chicken wings in batches and cook, turning occasionally, until golden brown and cooked through, about 10 minutes.
Transfer the chicken wings to a plate and serve.
Interesting Facts
This classic Japanese dish is usually served with pickled vegetables.
The salty flavor of this dish comes from the combination of soy sauce, salt, and sugar.
Mirin is a sweet Japanese cooking wine made from rice.