Akuma-kun

A company employee working for the world's largest electronics firm is asked by his superior to tutor his son in exchange for a promotion. He assumes the task will be simple, but quickly discovers that the boy, Ichiro Matsushita, is highly intelligent and has a sinister plan. Sato learns that he is the second tutor to be assigned to the boy in a short time, and the previous tutor's disappearance is unexplained. After being cursed and transformed into a lizard, Sato becomes one of the boy's servants. Ichiro is revealed to be Akuma-kun, a child prodigy skilled in black magic. His objective is to create a portal between hell and earth, summon powerful demons, and use them to conquer the world.