Ryuunosuke Uryuu

Birthday: January 31 Height: 174 cm Weight: 65 kg The master of Caster Ryuunosuke is a serial killer who summons Caster after murdering a family and using their blood as a component in the summoning ritual. Though he is not a magus he was selected by the Holy Grail to fulfill the wars requirement of seven Masters and seven Servants. Ryuunosuke knows nothing about magic or the fourth Holy Grail War his involvement in the war is simply to watch Caster kill people in unique and thrilling ways to relieve boredom. source: TypeMoon Wiki