01 - Rinse sushi rice under cold water until the water runs clear. Combine rice and water in a saucepan and bring to a boil. Cover, reduce heat to low, and simmer for 10 minutes. Remove from heat and let stand, covered, for an additional 10 minutes.
02 - Mix rice vinegar, sugar, and salt until dissolved. Gently fold the mixture into the cooked rice and allow it to cool slightly.
03 - Whisk soy sauce, sesame oil, rice vinegar, sriracha, and honey in a bowl. Add tuna cubes, green onions, and toasted sesame seeds. Toss gently to combine and refrigerate for 10 minutes.
04 - In a small bowl, blend mayonnaise, sriracha, and lime juice until smooth. Adjust spiciness according to preference.
05 - Divide seasoned rice evenly among 4 bowls. Top with marinated tuna, avocado slices, cucumber, carrot, and edamame. Drizzle with sriracha mayo. Garnish with pickled ginger, nori strips, furikake, and additional sesame seeds.
06 - Serve immediately, allowing diners to mix ingredients as desired.