“Kuroi-kun, won’t you go on a date with me?”
The Wakagashira of the Kuroguro group, Kuroi Kengou, has a troublesome childhood friend. The lawyer, Shirakaba, has been with him since they were born. Whenever he has time, Shirakaba comes to flirt with Kuroi. To get Kuroi’s attention, this courageous man even married a woman for a month. Shirakaba, who pushes forth his overflowing love, and Kuroi-kun, who puts up with it, their relationship is warmly watched over by the Kuroguro group’s men.

Then one day, Shirakaba announces he has taken on the position of the Kuroguro group’s legal advisor, and tensions rise between them!