01 - Rinse rice under cold water until water runs clear. Combine rice, 2.1 cups water, and a pinch of salt in a saucepan. Bring to a boil, cover, reduce heat, and simmer for 12-15 minutes until water is absorbed. Remove from heat and let rest, covered, for 5 minutes. Fluff with a fork.
02 - In a small bowl, mix 3 tablespoons soy sauce, brown sugar, honey, rice vinegar, and 1 tablespoon water. Set aside.
03 - Pat chicken thighs dry, season with 1/2 teaspoon salt and 1/4 teaspoon pepper. Heat 1 tablespoon oil in a large skillet over medium-high heat. Sear chicken for 3-4 minutes per side until golden brown. Remove from skillet and set aside.
04 - Discard excess oil from the pan. Return chicken to the skillet over medium heat. Pour in the caramel soy sauce. Cook, turning to coat, until sauce thickens and chicken is glazed, about 3-5 minutes. Remove chicken and cover to keep warm.
05 - In a separate pot, heat 1 tablespoon oil over medium heat. Add garlic, ginger, and onion; sauté until softened and fragrant, about 3 minutes. Pour in 3 1/4 cups chicken broth, 1 tablespoon soy sauce, and sesame oil. Bring to a simmer and cook for 10 minutes.
06 - Slice the caramelized chicken. Divide rice among bowls, ladle over garlic ginger broth, and top with chicken slices. Garnish with spring onions, sesame seeds, and cilantro if desired.