The Prince's Fairy Daughter

The Koi Fairy Bonnie is banished by the Celestial Emperor to help Prince Alistair Shaw ascend the throne. Bonnie finds Alistair and becomes a Princess. She uses her abilities to help him solve corruption cases, and quell barbarian rebellions. Alistair Shaw transforms into a pillar of the state. Bonnie exposes the Empress's collusion with barbarians to murder the former Empress. Alistair Shaw ascends the throne, completing Bonnie's mission.