Hawaiian
Whisk together soy sauce, sesame oil, and rice vinegar to make the marinade.
Toss the cubed fish gently in the marinade and let it sit for 10 minutes.
Divide the warm sushi rice between two bowls.
Arrange avocado, cucumber, and edamame over the rice.
Spoon the marinated fish on top.
Garnish with spring onion and sesame seeds, then serve immediately.