Yuichi Katagiri, a high school student, is abducted with four of his friends and forced to participate in a "Friends Game" to pay off a debt he was suddenly saddled with. The game is supposed to be easy to beat as long as you have friendship, but for some reason Yuichi and his friends are unable to beat the game. They suspect the existence of a traitor, and their friendship gradually begins to crumble. The ultimate mind game show is about to begin!
Utagawa Kotoha is a bright 25-year-old woman. She is sometimes timid, but she is also a curious person. Through her friend's introduction, Kotoha Utagawa moves to apartment #7 in an apartment building exclusively for women. There, she gets involved with weird phenomenons. She happens to meet Nakame Reishi. He introduces himself as a psychic, but he doesn’t have psychic abilities. This is in spite of Reishi Nakame's grandmother being an itako (blind women who are trained to become a spiritual medium). His aunt Iwato Shima is also the head of a Shinto shrine. Kotoha Utagawa and Reishi Nakame ask Shima Iwato to perform an exorcism.
Mio Meguro is a timid person. She is afraid of being hated by others, and this causes her to refrain from saying what she really wants to say. She doesn't have any specific things she wants to do. She got a job and eventually dated a man from her workplace. Mio Meguro wanted to marry the man, but he turns out to be a bad guy. Because of him, she becomes penniless and unemployed. Her life descends into a bottomless pit. Mio Meguro then happens to get a sharehouse, where the mysterious creatures known as yōkai live. The yōkai try to solve her problems in radical ways.
Tanaka Nozomu is one of the three high school students. People call her "Baka" ("Idiot"). She isn't timid and she can't read between the lines. Her friends are Kikuchi Akane and Saginomiya Shiori . Akane enjoys anime and manga. Shiori is extremely smart, but her emotions have dried up. These three girls are also classmates. Their homeroom teacher is Sawatari Masataka.
Three Japanese men in their thirties and forties are professionals working in law, dentistry and banking. These three men are close friends and they enjoy their lives as single men, but they begin to wonder about the merits or necessity for marriage.
Takanashi Shoko is a former lawyer. She was disbarred from the law profession due to an incident. Later, she persuades a university professor, who is accredited as a lawyer, to open a law firm. Takanashi Shoko hires a lawyer and assistants to work at the law firm. The team goes after legal victory. They go up against a large firm in a civil suit. While working on the suit, the team experiences difficult situations.
Kanji Senkawa receives requests which the police or private investigators can't handle. He solves the cases by threatening people. Kanji Senkawa meets wealthy university student Mio Kanesaka. She has a good heart and and can't ignore those in difficult situations. Kanji and Mio get involved in various cases including voice phishing and kidnappings.
Haraguchi Motoko works as a temp at a bank. To pay off debt that she inherited from her parents, she also works as a hostess at a club in Ginza.
Kamiwatari Kotone is a geisha in Kyoto. While she is sleeping after a night of drinking, her fellow geisha is killed. Kotone Kamiwatari is falsely accused of her murder and is sent to prison. There, she is bullied by other prisoners, but Kotone relies on her training from senior geishas to persevere. She also learns why she was framed for murder and sent to prison.
Set in the Edo period, a story revolves around Kiyo, a woman who strives to overcome status differences of those days. When she pledges to live for love, a knife attack occurs at Edo castle. And as a 48th loyal retainer, her fate changes after a raid on Kira: she is determined to serve at the inner palace of Edo Castle called "Ooku".