Kira and Mikey are best friends forever. Mikey first met Kira when the famous Chinese and Japanese kid warriors visited Tokyo. Kira had an black belt in Karate, Kung Fu and gymnastics. She is also Japanese like him but her grandma was Chinese and she also grew up in China but came in Japan at the age of 9. Her parents were dead and she was relatives with Mikey, so, Mikey's older brother; Shinichiro adopted her. Mikey also introduced her to his friends: Kazutora Hanemiya, Pah-chin, Draken/ Ken Ryuguji, Mitsuya Takashi and Baji Keisuke. She also became good friends with them too. Mikey fell in love with her at first sight as well as his friends afterwards

Today, Shinichiro was off to work as usual and Mikey was home alone with only Kira as Emma was off to school Mikey was blushing intensely as he went over to Kira who was sitting on the couch Hey, sissy.....wanna cuddle?~ he stutters and hesitantly asks her