CHARACTER HISTORY - As a child, Ishida was trained in the natural born powers he had inherited from his ancestors. His grandfather, Soken, taught the young boy his hertitage, as Uryu's father, Ryuken, did not practice the ways of the Quincy, finding no profit in such a venture. Ishida developed a natural hatred of Shinigami, when they arrived too late to assist his grandfather against a Hollow attack, causing both distrust and disgust with Soul Society. Ichigo Kurosaki was originally oblivious to his Uryu's existance, though Ishida could sense the power of Ichigo, and was able to see the spirit thread of a Shinigami once Kurosaki had become one. Within school, he has the highest academic standing, as well as being part of the after school Handicraft's Club allongside Orihime. His skill is considered so great, that the girl's will often bring their stuffed animals for him to repair, and has become the stitcher for the damaged animal body of Kon. While first seeing each other with animosity, due to their polar opposite views and powers, Ichigo and Ishida eventually come to see one another as a potentially powerful ally, and even depend on the other when in a pinch.
Uryuu has even become a casual member of Kurosaki's in-school clique on scattered occassions. While their personality and opinions continue to clash from time to time, they are more repsectful of each others view. During the Soul Society Arc, Uryuu displayed great power and ability, even going as far as to lose his Quincy powers for the briefest moment to surpass the strength of a Shinigami's Bankai; that of Mayuri Kurotsuchi, who had conducted experiments on Ishida's grandfather and many other Quincy. He would go on through the Bount filler arc without any powers, but his intelligence made him an important part of the team. As the Arrancar Arc continues on, we know that Ryuken, Uryu's father, has taken it upon himself to help restore his son's Quincy Abilities. They were both training in a life or death struggle, which ended with mentally and physically exhausted Uryu, who was then hit exactly 19 mm right of his heart with a spirit arrow. This formed an X Shaped scar on his chest that would bring his Quincy power's back to full use.