After cooking the sushi rice, mix with 1 teaspoon fine salt and 2 tablespoons furikake. Let sit covered.
Dice chicken small. Mix with 2 tsp soy sauce, 1 tbsp sake, 1/4 tsp baking soda, 1 tsp cornstarch. Refrigerate 30 minutes.
Combine teriyaki sauce: 1 tbsp soy, 1 tbsp mirin, 1 tbsp brown sugar.
Heat 1 tbsp oil in pan. Cook marinated chicken 2-3 minutes. Add garlic, then sauce. Thicken to glaze. Cool.
Wet hands. Scoop 1/3 cup rice, make well, add 1 tbsp filling. Cover with more rice, shape triangle. Wrap nori. Repeat.