Marupasu

The crow whose soul was saved by Akuma after being tortured and left to die by humans, he now serves Akuma as his pet. He was to spy on Miu by being her little brother, who is very cute. He speaks to Miu and tells her that Akuma is very gentle and that humans are even worse. Later on, when Akuma becomes Miu's biology teacher, he becomes Miu's schoolmate. (Source: Wikipedia)