Cooking spray
plus 1 1/2 tsp. unseasoned rice vinegar
granulated sugar
kosher salt
canola oil
cream cheese (about 3 tbsp.), room temperature
kewpie mayonnaise, plus more for drizzling
sriracha, plus more for drizzling
reduced-sodium soy sauce, plus more for serving
wasabi
scallions, sliced, divided
imitation crab, salmon, or tuna, chopped
furikake, divided
avocado, sliced or chopped
finely chopped cucumber
Toasted sesame seeds and small nori sheets, for serving