What is true strength? Is it a concept, is it a virtue, or neither? Ventum Celestia tries for himself to find the answer, and attempts life with a trial and error attitude. Travel through the Kingdom of Celestia alongside Ventum, a boy born without the concepts of evil. Experience alongside him what wrongdoings affect the Kingdom, and how he reacts to them. Companied by his brother, Striker, and best friend, Autumn, these three characters grow together and offer unique roles to how sequences occur.