Hiroshige Akihisa works for a karaoke company. When he is interviewed about the past 30 years of the Japanese music industry, he gets confused when he is asked about his high school student days. An incident that happened 29 years ago caused him to suppress his memories, which have now come back. On March 20, 1995, the Tokyo subway sarin attack took place. At that time, Akihisa was a high school student who got good grades and was well-mannered, but the Tokyo subway sarin attack led him to face the death of someone he knew and shook his world. Around that time, he was suddenly called out by his classmate Suzuki Shotaro, whom he wasn't very close to. Shotaro asked him if he wanted to live vacantly into his adulthood and then die. Would he be happy living that type of life? Akihisa then joined Shotaro’s group and hung out with them in Shibuya. One day, Shotaro is attacked by someone. Akihisa decides to take revenge on the attacker and begins to search for him.
Akira is a 30-year-old salaryman married to novelist Sonoko. After five years of marriage things between them have cooled and now they barely speak. One evening Akira is suddenly struck with an unbearable headache and, after being taken to the hospital, is told his illness is life-threatening. At the same time, a strange change starts to take over Akira’s body. The Akira who walks out of the operating theater has transformed into a woman!
One day Mio attends a middle school reunion and is reunited with her first love, Shuichi. Her love is rekindled when the guy approaches her, but they get caught up in an incident where members of the reunion start dying one after another.
Atsuko and Akira are a husband and wife duo with a daughter and a son. Atsuko is in charge of the retirement finances. She saves from money given to her by her husband and also earns money herself by working part-time. She stretches every yen by leading a frugal life. yet, expenses come up. These include their daughter's upcoming wedding and the funeral expenses of the husband's father. Then, and at exactly the worst time, the couple finds itself unemployed.
Busujima, an author and former police, investigates a murder related to the publishing world with the police.
Three years after the event of the series, Takashi Mitsuhashi and Shinji Ito face the new enemies.
Sayaka Ogino works as an editor at a women's fashion magazine. She does her job well and enjoys her work. Sayaka Ogino has a personality that is sincere and honest. She is married to Kazuma, who works at advertising agency. They have been married for 6 years. Kazuma appears to be a perfect husband. He is kind, understands Sayaka's work, and shares housework with her. One thing that bothers Sayaka about her husband is that he does not seem to want to have a baby.
Yua Shinkawa (新川優愛, Shinkawa Yua, December 28, 1993) is a Japanese actress, fashion model, talent and former gravure idol. She is from Saitama prefecture and belongs to the Theater Company Tohai. She is married.