Cook rice according to package directions. While rice is cooking, finely shred the imitation crab and add that to a bowl with sriracha, wasabi, green onion, cream cheese, Ty Ling Sweet and Sour Sauce and kewpie mayo. Stir to combine. When the rice is done cooking, add rice vinegar, salt, and sugar. Stir to combine.
Press the rice into the bottom of an 8×8 baking dish. Sprinkle it with furikake seasoning. Spread the crab mixture on top of the rice and sprinkle with more furikake. Drizzle with extra Sriracha and kewpie mayo if desired.