Megumi Amatsuka is the main character and protagonist of the story and a sixteen-years-old student at high school.
Megumi was originally a boy until age of 9-years-old before being transformed into a girl by a little demon.
Her name is Megumi which is a feminine name. According to her story, it´s still a boy's name before a transformation by a little demon. In real world, Megumi is one of Japanese female names.
According to Fujiki during a conversion with Miki, Megumi is more feminine than a normal girl.
She is called Angel by pepole in city and many male students at high school, Meg in English version (or Megu in Japanese version) and Princess by Genzou.