In a bowl, combine the soy sauce, brown sugar, mirin, rice vinegar, minced garlic, and grated ginger.
Cut the salmon into bite-sized pieces.
Add the salmon to the sauce mixture. Cover and refrigerate for about 20 minutes.
Remove the salmon pieces from the marinade and place them in the air fryer. Cook at 385°F for 6-8 minutes, or until the internal temperature reaches 145°F.
Meanwhile, pour the remaining marinade into a pan. Heat over medium heat and add a cornstarch slurry (mix the cornstarch with a small amount of water first). Let it simmer until thickened.
Assemble your bowl with rice, your favorite veggies, and the teriyaki salmon bites. Drizzle with the thickened sauce and enjoy!