The story revolves around Aya Mizukawa, a first-year student at a public high school who is forced to work every day to support his family due to his parents' lazy nature. On Christmas Eve, Aya returns home to find that his parents have fled after leaving him with a blank note and 150 million yen in debt. To pay off the debt, they even attempted to sell Aya's organs. Pursued by the yakuza and with no way out, Aya plans to kidnap a girl from a nearby park for ransom. After rescuing a girl who was being harassed, he asks her, "Can you come with me?" In Japanese, "come with me" and "be my girlfriend" sound the same. Through a series of misunderstandings, Aya ends up being seen as the girl's savior. It turns out that this girl is the heiress of the Sanzenin conglomerate. To repay her debt of gratitude, she hires Aya as her butler and repays his debt. However, the well-meaning Aya insists on paying back the money, and thus begins his life as a butler.