Yusuke Harada (原田ユウスケ, Harada Yuusuke) is an ill-bred college student and the son of the mayor. He acts as the catalyst of the events in the Mayor Harada Scandal arc of the first volume.
He has brown hair with a tinge of black in the novels and wears loose and baggy clothing, usually a plain colored T-shirt with a black jacket and gray sweatpants.
Due to his father's influence and social status, Yusuke grew up spoiled and lived a carefree life, provided with whatever he wanted and without worrying about consequences. He had grown apathetic to others and became selfish, purposefully leeching off of his father for a luxurious life. At the start of the series, he had started taking women off the street and forced himself on them and kills them during or after the act. He seems to have impulses to kill people in general and a love for bloodshed, as he not only kills every girl he is with but he orders his friends to beat up a foreigner just for his entertainment. Unintelligent, or more accurately unconcerned of the consequences, he causes a lot of grief and trouble for his father and Munakata who have to clean up after his misconducts on a near daily basis.
Yusuke calls one of his father's personal hitmen, Munakata, to inform him of another woman he killed, only for Reiko to be sent in his place. Yusuke points her in the direction of where he left the body and brushes off her scolding nonchalantly before resuming to watch the video he took of his college friends beating up a man. When asked by Reiko for the names of his friends, Yusuke provides them, despite her telling him she would kill them.
To keep him preoccupied and without making more trouble, his father purchases women for him to fulfill his sexual desires with, one being a Chinese woman named Qiaomei Lin. After he rapes and kills her, he hands her off to Munakata to dispose of her body. The next day, he calls Munakata again, demanding for another woman. Reiko returns to his place to watch over him and wait for Munakata, but when she gets called by the Niwaka Samurai she attempts to leave, informing him that a tremendous killer is coming to kill him. Yusuke panics and hides in the bathtub, bursting out of there with a gun when Zenji Banba and Xianming Lin are in the room looking for him. Before he could shoot Lin, Saitoh manages to knock him out by pitching a baseball at him. He is restrained and taken to a warehouse along the pier where he is interrogated by Jiro and Banba to confess to his crimes and how he had managed to cover the incidents up. He is punched by Lin when he admits to Qiaomei's rape and murder and is then left to Jiro and Martínez for the remainder of the session. It is directly stated in the novel that he would get raped and killed, and it can be assumed this was the case when his death is mentioned at the end of the novel. His confession had been recorded, which was then sent to Enokida who had shown the footage to the public via an electromagnetic wave hijack.