Dolmen X

Okitegami Kyoko is a beautiful private detective who has a deep love for money. She is also known as the Forgetful Detective. Her memory is reset when she sleeps at night, which means she can strictly adhere to confidentiality requirements. She solves all her cases within a day, whatever they may be. She is the world's fastest detective! There is something really important that Kyoko must never forget, and it is written on her body with a magic pen. “I am Okitegami Kyoko, detective. My memory is reset after one day.” Meanwhile, even though Yakusuke Kakushidate has a crush on Kyoko Okitegami, he is always mistaken by her as the culprit of a case. No matter how close he gets to Kyoko, she totally forgets about him by the next day.

Ichiharu Sudo (Taisuke Fujigaya) is a furniture craftsman. He is very serious about his craft and becomes immersed in his work, but he has a hard time to create a new work that can surpass that of his teacher. This causes him to go into a slump. Ichiharu Sudo meets Sakurako Motohashi (Nao). Sakurako Motohashi works at an advertising company and she isn't very good when it comes to dating. These two people become attracted to each other, but they both carry emotional wounds that they don't talk about. Ichiharu Sudo can't get over the death of a person who was very important to him. For about a week every December, Ichiharu Sudo loses his voice. Meanwhile, Sakurako Motohashi’s father went bankrupt. She has supported her family since that time, but she wants to run away from her situation. Ichiharu Sudo and Sakurako Motohashi begin to date for themselves.

Makoto Masaki and Haruko Kogetsu are both 29 years old and single. Since they were children, they have passed each other at various places like on the beach and shrines. Yet, the two are not aware of each other at all. One day, a man appears in front of Makoto Masaki and introduces himself as God. He tells Makoto Masaki about his destined soul mate and that she works next door. When he faces Haruko Kogetsu, he tells her "I'm your destiny."

Madoka Tsutsumi is a university student. He rarely expresses his feelings and he has never done an impulsive act in his life. One night, he sees an old man and a pink rabbit struggling physically. The pink rabbit seems surprised and asks Madoka if he can see them. The pink rabbit then introduces itself as the Angel of Death and says the old man is a ghost who died yesterday.

30-year-old Kamata Rinko is single and a struggling scriptwriter. She has no boyfriend and keeps having night outs at drinking spots with her girlfriends Kaori and Koyuki. “If I become beautiful, a better guy will appear!” “If we grow to like each other, we can get married!” They will not stop talking about these hypothetical questions. Then a younger, handsome, golden-haired guy suddenly utters, “These “what if” women!” and the trio have to face the harsh reality that they are no longer girls. Rinko enters her 30s while still immature, seeking happiness and struggling with romance and work.

Tsukasa Kobayashi has the appearance and educational background of an elite and earns a good salary, but he is actually incompetent at his job and makes mistakes frequently, earning the ire of his co-workers. Tsukasa was about to quit his job after much humiliation at work when he learns that his wife is pregnant.