Ah, alrighty! So the general concept I had was the classic lab experiment trope. My character one of a few orphans taken into one of the big shady labs in order to raise "perfect soldiers of humanity." So his whole life, he had been both enhanced, and trained in all sorts of techniques to accomplish this. In this regard, my character would be more of a fighter than a mage, something similar to an Eldritch Knight in terms of spellcasting ability, although a bit more limited. His primary skills are with weapons, and the starweaving ability I had in mind should further show it.

The reason why he's an exorcist was it made sense that his training would include the sorts of spells that the Japanese would use against the supernatural, so things like protective talismans. Enhancement-wise, I was thinking something in the realm of the purely biological. The idea I had was something along the lines of hastened body processes. Enhanced speed, reaction time, and healing. All this was balanced by the character also possessing a fast metabolism, which requires them to eat much more than the average human.