Cut chicken wings into 2 parts, wings and drumettes.
Mix soy sauce, Sake, Mirin, salt, garlic and ginger in a large bowl. Add chicken and marinade for 1 hour.
In a different bowl, mix flour, cornstarch, salt and pepper. Coat marinated chicken pieces with flour mixture.
Heat oil at medium high heat (350F). Deep fry for 5-8 minutes depending on the size of meat.