Ryūichi Ishida (石田龍一, Ishida Ryūichi, lit. "Stone Field Where a River Flows, Supreme Dragon") is the son of Uryuu Ishida, current heir to the Quincy, and self-proclaimed Quincy Prince (滅却師王子, Kunishi Ouji). He is a Human of considerable wealth, skill and prestige that has made his own personal vow to protect and defend humanity from all supernatural threats. Though he is in high school, Ryuichi is immensely intelligent having adapted and invented a number of technological wonders to aid him in his fight against the supernatural-- the most prominent of his creations being ADA herself; an artificial zanpakutou spirit. He is a powerful Quincy warrior that has battled Arrancar, demons, and rogue shinigami, besting them all. Though Soul Society remains wary of any lingering Quincy, Ryuichi has