Bring a small pot of water to a boil, gently lower the egg in, and simmer for 6.5 minutes for a soft boil; immediately transfer to an ice bath.
In a large skillet over medium heat, add the diced pork belly and cook until the fat has rendered and the pieces are golden and crispy.
Add the ground pork to the skillet with the pork belly, breaking it up with a spatula until browned and cooked through.
Stir in the minced garlic, grated ginger, sea salt, and black pepper, cooking for 1 minute until fragrant.
Whisk the gochujang and tamari together in a small bowl, then pour over the pork mixture, stirring to coat every piece in the spicy glaze.
In a separate pan, lightly sauté the cauliflower rice with the sesame oil for 3-4 minutes until tender but not mushy.
Assemble the bowl by placing the cauliflower rice at the base, topped with the spicy pork mixture, kimchi, and sliced cucumbers.
Peel the soft-boiled egg, slice it in half to reveal the jammy yolk, and place it on top before serving.