Ryuji Wong is the son of an wong father from Chinese and the older brother of Ada Wong. However ,both of Ryuji and Ada has spit up each other before they were born in different countries because their parents tried to protect them so zombies won't bite them. And Ryuji never knows about his older sister,neither she do. Ryuji is in Tokyo,Shinjuka Ryuji studied the hunter notes left by his parents regarding the secrets of Wong's blood and Ada Wong . "Even she is a crimson,I am justice,we're different jobs. Ryu-manager about Ada Wong.