Slice Asian eggplant into 1 inch, and soak them in a water for about 10 minutes. Drain he water and set aside.
Cut chicken into bite-size, marinate with Mentsuyu. Allow it to sit for 5-10 minutes to let the flavors infuse.
Meanwhile, combine the sauce ingredients into a small bowl and set aside.
Coat the marinated chicken with potato starch.
Heat oil in a pan over medium-high heat. add the chicken, cook both side until golden brown and crispy.
Remove the chicken from the pan and set it aside.
In the same pan, add the eggplant and cook both side until golden brown.
Add the chicken, pour the sauce, and toss.
Sprinkle chopped chive, and serve hot.