Mr Devil

When the demons lose their jobs and complain to Lucifer, thinking their job is over. Lucifer summoned Leviathan, the demon lord of the seas who never came down to earth to fulfill his first task of dragging mankind into hell. Leviathan who doesn't like to be ordered around, balks at the task. Until one day, he saw a woman jump into the ocean and drown. However, the woman seemed to change her mind, she swam to the surface to save herself after her suicide attempt. Confused by what he had witnessed, Leviathan decided to accept an assignment from Lucifer in order to drag the mysterious woman into the hell.