Anjuu is the daughter of Sendou Momoka ("Dragon Momoka") and Ryuga Kou. She starts at the manga at the begininng of her first year in middle school at Seiryuu Academy. She is accompanied by her pet bird named Lime - who is actually a dragon, but yet cannot take the form of it yet. When Anjuu was only young, she possessed unimaginable powers from her parents - and they sealed the powers inside Lime. When Anjuu users her powers - the spirit of the dragon makes her grow older. She takes the alias of 'Saint Dragon Girl' as the 'miraculous angel' protector of the school. She is on the Student Council and part of the guard duty to protect the academy.