Ai Asato  

Maria, 麻里 愛

Ai is 169 cm tall and weighs 48 kg. Her blood type is O and her BWH measurements are 93*58*88. She was born on May 5th in New York, making her a daughter of martial artist Asato Ban. Ai has expertise in various forms of martial arts and used to be a Muay Thai champion. Prior to changing her sex, she went by the name Ryuji. The reason for this change was due to falling in love with her coach, who left for another country before Ai could express her feelings. Her former coach resembled Ryotsu, which is why she became attracted to him. Currently, Ai works as a traffic police at Katsushika Police Station in order to see Ryotsu frequently. She tends to get jealous easily and physically harms Ryotsu when she believes he's seeing other girls. In the manga version of the story, Ai undergoes a transformation into a genetic woman through magic.