20 years ago a meteor hit earth, and gave humanity superpowers! in present time we have Sky, a boy who has super hearing. After finally graduating junior high, Sky and his friends celebrated by going to the History of Heroes Museum - But suddenly villains attack the museum. In the midst of all the chaos Sky finds a mysterious bow that is now linked to him. Unfortunately, more sinister forces are interested in the bow as well...

A boy named Barry is on a quest to save a dragon, and in order to do that, he seeks the help of a local legend known as the Golden Revenger.

A short story of Kai's journey before he appears in the main series "Blue Sky"