Ninjago: The Master of Magic (Under Editing)

On a stormy night, Ronin find a frightened young girl in the city and brought her back to the Ninjago City. The girl has been separated from her family, but was taken in by the bounty hunter, and is given the title of as a protector.
But as the years passed, an uncertain trouble quickly makes itself known through a tournament. Though very shy, Erika slowly begins to trust the legendary Ninja Team, revealing her kind, mischievous, and spirited self. In return, the Ninja gladly accept Diana with open arms as their new teammate and ninja sister.
But their luck of irony has a knack for happening when they least expected it. She has a strong feeling that there are many secrets being kept from her since she was a child. When she learns that her past is much more startling than it seems. But little did Diana know, she had caught somebody's heart with her empathetic and mischievous self.
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Disclaimer: Don't worry, I'm writing for fun. Inspired by Lego Ninjago Series.