Kabu was told by his father, that he is going to succeed the Umezaki group, but he is hesitant to do so. On the other hand, Sagawa, who is regarded as the successor of the group by everyone else, tests Kabu's loyalty by giving him an ultimatum, to give up his company or Nirasawa. For Kabu, Nirasawa is not only a convenient pawn, but at the same time he's a lover, that has captivated him with his unexpected cuteness. Will Kabu really send Nirasawa away!? This story takes place 4 years after the events of Bi no Isu.