In a bowl, whisk together the honey, soy sauce, rice vinegar, garlic, ginger, brown sugar, and sesame oil.
Place the chicken in the slow cooker, and pour the whisked mixture above, over the chicken.
Cover the lid, and cook on high for 4 hours or low for 7 hours.
Remove the chicken from the pot, and shred it with two forks.
Now, collect the teriyaki sauce left in the slow cooker, and pour it through a strainer into a skillet.
Place the skillet over medium heat, then allow to cook till it starts simmering.
Get a small bowl, mix the cornstarch with the water, and pour this mixture into the skillet.
Stir the skillet, and allow it to cook for a few minutes until it has thickened.
Pour this sauce over the shredded chicken. Viola, your tender teriyaki chicken is ready to serve. You can garnish with sesame seeds and sliced green onions.