The Satsui no Hado made its debut during the first World Warrior Tournament, where Ryu unknowingly awakened something inside of him to defeat Sagat in a drastic effort. Originally, Ryu scarred Sagat with a single Shoryuken. It was later retconned in Street Fighter Alpha that Ryu lost control of himself and his rage by rising up fist first, scarring Sagat with a Metsu Shoryuken instead. His attack took on the properties of Goutetsu's original art, despite having never been taught it by his master Gouken. Although Sagat wanted revenge for his scarred chest, he never knew that the scar came from something that had awakened the darkness inside of Ryu until the events of Street Fighter Alpha 3. Ever since then, Ryu has had a massive struggle against the Satsui no Hado's influence over him throu