One winter day, Kanon Kikuchi saves an elderly man who was about to be hit by a car on his way to his sister's birthday party. In fact, that old man is Takamido Kichiemon Shigehisa, the chairman of a world-famous large corporation! There was Chairman Takamido and his grandson, the ultimate handsome scion, Hideyuki Takamido. To Kanon's surprise, the president presses him to marry Hideyuki, saying, "In return for my life, I will welcome you into the Takamido family as my wife." You're obsessed with Kanon...!?