Sora, also known as the Warrior, is the main protagonist in the Kingdom Heartsseries, as well as a Keyblade wielder. He is an upbeat teenager who may seem simple-minded at times, but is very aware of the importance of his quest. He possesses a strong sense of justice and an unrelenting heart. At times, he is impulsive and quick to anger when defending his friends, but he is always sincere about what he says and does. He has been best friends with Riku and Kairi since their early childhood.
Sora is four during Kingdom Hearts Birth by Sleep, fourteen years old at the beginning of Kingdom Heartsand Kingdom Hearts: Chain of Memories, and fifteen during the events of Kingdom Hearts II and Kingdom Hearts 3D: Dream Drop Distance. He lives on Destiny Islands with his best friends Kairi and Riku, and all three of them dream to venture from Destiny Islands to find out what lies beyond. Sora is also the original persona of his own Heartless and Roxas, the source of Xion's memories, and the carrier of Ventus's heart. Sora's name is derived from the Japanese word for "sky".