You are not the host of some fragments of Soul King, but an entire body part of His. This has caused your spiritual power to grow to immeasurable level, as well as boosting your physical ability to accommodate the immense spiritual power. Your control over the world around you, mastery of innate abilities and Fullbringer has grown to absurd amounts, letting you fight the members of Zero Division on equal ground. You also possess an ability from the Soul King's body part you are the host of. An example being the authority of stagnation and stillness governed by His right arm. This ability synergizes completely with your Fullbringer ability, boosting it to unprecedented levels. Moreover, unlike the normal body parts of Soul King, the one you are the host of is not sapient or sentient and will not develop sentience in the future.
(You can design the ability as well as the body part you are the host of.)