Lampo The Hypersonic Boy

Lampo, a boy living in a port town on the Evlian Peninsula, meets Yoshino, a girl protected by a robot that fell from the sky while he was fishing. She is a priestess of the Jehuan Kingdom says that she cannot return to the Kingdom of God until she finds out the true intentions of her attendant Taihou, who took her away, but the Kingdom's army arrives on the peninsula to bring Yoshino back.