Kiriko Isono

The First Investigative Division is the star unit of the Tokyo Metropolitan Police Department. Jun'ichi Ōiwa, the head of the division, leads around 400 elite detectives. He has an extremely heavy responsibility: attends initial investigations at the scenes of all brutal crimes that occur within the metropolis, decides on the course of action of the investigations at the same time as he directs many investigation task forces and gets into investigations himself at the critical phase. However, Ōiwa is definitely not a superman. Amid his suffering, Ōiwa overcomes this grave responsibility and is quite simply a "life-size hero" and "ideal boss" to his subordinates.

Aizawa Senba's husband asks her to get divorced after he meets his first love through facebook and wants to marry her. In order for her to get custody of her son, she decides to work at a luxurious hotel, and there she meets the young heir of the hotel, Takaoka Yuusuke, and starts to have feelings for him.