In a food processor, blend the edamame, tahini, rice vinegar, soy sauce, garlic, and half the water until smooth and creamy. Season with salt to taste.
Add water/broth to the rinsed sushi rice and bring to a boil, then reduce to a simmer and cover for 16 minutes to ensure the sushi rice is extra soft by slightly overcooking it. Allow it to rest with lid on for an additional 10 minutes.
Peel, seed, and finely chop the cucumber, adding to a bowl of rice vinegar for at least 10 minutes.
Assemble the bowl starting with a generous layer of edamame hummus as the base of your bowl. Add a layer of softened rice on top, gently pressing it into the hummus. Layer the pickled cucumber and diced tuna or imitation crab. Drizzle the soy glaze over the top for an extra savory umami flavor. Optional Garnish: A sprinkle of sesame seeds or dash of sesame oil