him. He then begins to try and break up Kei and Mei, even thought he and Kei have become best friends. They eventually team up so Yukichi can win Mei's heart and they marry instead of she and Kei. Kojima Hijiri as Kamijo Reiko Reiko is the rich married lover of Ojiro. She joins the shuffle claiming she wants to experience love and to feel beautiful since her husband is cheating on her with a younger woman. She has the theory that it is okay if she sleeps with other men because her soul mate is her husband and that will never change. Later it is revealed that her husband knew about the shuffle and was okay with it, they participate so Reiko can conceive a child. She becomes pregnant after spending one week with each of the men. She tells the men it doesn't matter who the father is since it will be her husband's child. In the end it is revealed that she wishes to divorce her husband since he is cheating on her and never truly loved her. She does confide that the child's father is actually Masato since she never had sex with Kei or Yukichi and the timing isn't right for it to be Ojiro's since they haven't slept together since before the shuffle started. Yoshitaka Yuriko as Hayakawa Kairi Kairi is a young art genius who paints the image of Thanatos. She is a patient of Masato's, she claims to see Thanatos everywhere she goes and he wishes for her to kill herself. She has made a promise that she won't commit suicide before her 20th birthday. She joins the shuffle simply because Masato tells her too. She is very emotionless and doesn't speak often. As the shuffle goes on and she dates the different men she begins to react more and express emotions. She smiled and seemed happy after Kei won her a defective panda plushy from a claw game during their date. She does fall in love with Ojiro after their week together, even though he seems indifferent and mocks her for "pretending" to want to die. She has sex with him and later follows him around as if his pet. Even though she still wishes to die she does begin to open up thanks to the attention and affection from Ojiro. He also reluctantly falls in love with her. During her