Cook Fluffy Rice:
Wash the white rice under cold running water until the water is clear. In a saucepan, combine the rice with water and a pinch of salt; bring to a boil. Lower the heat to low, cover, and let simmer for 15-18 minutes until all liquid is absorbed. Remove from heat, let it steam for 5 minutes, then fluff with a fork.Make Mango Salsa:
In a bowl, combine the diced mango, minced purple onion, minced jalapeno, and chopped cilantro. Drizzle with 1 tbsp lime juice, toss gently, and reserve.Prepare Sriracha Mayo:
In a separate bowl, whisk together the mayonnaise, sriracha, and 1 tbsp lime juice until the mixture is smooth and turns a light orange. Pour into a squeeze bottle for easy drizzling.Sear Spiced Shrimp:
Thoroughly dry the shrimp with paper towels. Toss them with olive oil, then coat evenly with chili powder, smoked paprika, cumin, and salt. Heat a cast-iron skillet over medium-high heat; sear the shrimp for 2-3 minutes per side until the edges are deeply charred.Assemble the Bowl:
In a wide shallow bowl, spread a layer of the fluffy rice. Arrange the seared shrimp, a fan of avocado slices, and a scoop of mango salsa in separate sections. Drizzle the lime-chili sauce in a zigzag pattern over the top, then sprinkle with black sesame seeds and a few fresh cilantro leaves.