Kairi is a character from the Street Fighter EX series. He was born to the Mizukami house. He lost his memories when he fought his father to the death and wandered the world fighting without reason. The words "you must challenge your limits" were in his memories. Led by these words, Kairi thought that the only way to recover his memories was to follow the way of the Shura (修羅) and fight, replacing his lost memories with the nature of a demon. As he continued fighting, Kairi's hair was turned from black to white and his body began to be covered in scars. Eventually Kairi fought his younger sister Hokuto on occasions. Despite Nanase's best attempts the fighting between the 2 seems inevitable.
He is not to be confused with a Kingdom Hearts character of the same name.