
In a bowl, mix the chicken thighs with soy sauce, sugar, sake, and mirin (if using) until well coated.
Marinate for 10-15 minutes.
Place the chicken thighs in the air fryer basket in a single layer. Air fry at 190°C (375°F) for 10 minutes.
Flip the chicken thighs and spoon the marinade over them. Air fry for another 4 minutes, until the chicken is cooked through.Pro Tip: Add the marinade at this stage so it doesn’t dry up during cooking.
Serve the thighs whole, garnished with sesame seeds and scallions, with the dripping from the air fryer basket on the side.