There are two heroes to play as in this side-scrolling shooter:

One of these playable characters is a research subject named Mitsuha, who escapes from the research facility of the Allied Forces and has been in hiding ever since. He refuges in the neutral town of Zokudan. However, these peaceful days have been cut short as the battle between the Empire and Allied forces comes to Zokudan’s doorstep. Mitsuha finally feels that enough is enough and flies off superman-style to save the townspeople.

The other protagonist is the granddaughter of the great witch Fana, named Tirina. She’s about to take her formal witch examinations. One of these tests (if not the entire exam) is that she travel the land in search of the mystical beings that threaten our world and seal them away before any of us notice either of their existence. She sets off flying with her weird looking penguin-mascot-…thingy to prove that she can be just as great of a witch as her grandmother was.

[From White Masq]