Cook rice according to package directions or in a rice cooker or saucepan. Preheat oven to 350°F.
While rice is cooking, finely shred the imitation crab and slice the green onions.
In a bowl, mix shredded crab, kewpie mayo, green onion, cream cheese, sriracha, and wasabi. Stir to combine. Set aside.
Once rice has cooked, stir in the rice vinegar, salt, and sugar until well combined.
Press the rice into the bottom of an 8x8 baking dish. Sprinkle with furikake seasoning.
For the next layer, spread the crab mixture on top of the rice and sprinkle with more furikake. Drizzle with extra sriracha and kewpie mayo if desired.
Bake for 20-25 minutes. For an extra crispy topping, broil on high for 1-2 minutes after baking.
Serve with seaweed snacks and soy sauce. Place a scoop of the sushi bake on a seaweed sheet. Bring two opposite sides of the sheet together, dip in soy sauce, and eat it like a little taco.