Parasites (Prototype Male Reader X Parasyte the Maxim)

Y/N Mercer, normal kid attending high school and excels in every class. Mostly finds his life boring and empty, seeing as he has never found anything meaningful or something to make him truly feel alive. Until one night, when after receiving a shot to the chest, something had entered his body, and healed his wound. Not only that, he later finds out his body has become a weapon of mass destruction. The question is: what will he do with this newfound power, and what will he face up ahead?