Cube the chicken into bite sized pieces. Mix soy sauce, mirin, fish sauce, garlic and cornstarch in bowl, and add the chicken. Set aside or cover and throw in the fridge based on timing. (You can do this step in the morning and leave in the fridge to marinate)
Rinse the rise. I find dropping it to a sieve and then the sieve into an appropriate sized bowl, fill with water and stir with your fingers. The water will turn white from the starch. Pour off and repeat. I find it is usually pretty clear on the third rinse. While you can skip this step, I think it makes a nice textural difference between sticky rice (rinses) and gluey rice (unrinsed).
Add wet rice to a pot, add an equal amount of water, one cup in this case. Turn on high and bring to a boil. When it does, give a quick stir to release some of the rice from the bottom of the pan, then turn to low, cover and set the timer for 18 min.
Julienne your veggies. Diced is just fine of course, it's just an aesthetic thing for me. Feel free to mix and match with what you have the fridge. Do try, however, to find some contrasting colors as you want this dish to look as colorful as it tastes.
When the rice is about 10 minutes into timer time, heat your wok or skillet with 1-2 tbsp of oil. While the oil is heating up, remove the chicken from the marinade and blot dryish with a paper towel. Move chicken into oil and stir fry until nicely browned and cooked through (about 5 min). Remove to a plate or such.
Heat remaining 1-2 tbsp oil. Starting with ginger and garlic, add to hot oil and stir to infuse oil with their flavor and coat the garlic so its less likely to stick to the pan. Add the rest of the veggies and stir fry until starting to soften, 3-5 minutes. Between stirrings, mixed the sauce ingredients together in a small bowl.
Turn rice off when the timer lets you know its time. I prefer to move off the hot element to a cool one to let the rice sit while you finish up.
Add the chicken back to the pan with the veggies and sauce. Stir fry until you see the sauce thicken up. Remove pan from the heat, and cover while you set out plates or bowls.
Add 1/4 of the rice to a bowl or plate. Partially cover with the chicken and veggies. Add any optional toppings you might like. I like roasted peanuts along with something spicy like sriracha or chile crisp.