33-year-old Akiyama Satomi is a history teacher at the prestigious all-girls high school she once attended. She has earned the nickname "ohitorisama" (meaning "one person") for her perfectionism and capability to handle any work by herself. At the same time, the name also refers to her lack of romance. One day, a young man named Shinichi arrives at the school as a temporary instructor. He's ten years younger than Satomi, has only worked part-time jobs, and has neither money nor status. Although the other female teachers and students find him cute, he is completely not Satomi's type... or is he? Will love blossom between this unlikely pair?

Can a coward commit suicide? Meet Kita Yoshio, a very unlucky man who has chosen his close friend's death anniversary as his suicide date, which is 11 days away. The number 11 has been quite significant throughout his life: he was born on November 11th; his roll call number at school was #11; and 11 years ago, he and his wife, Mizuho, went through a divorce. Debt-laden and feeling unneeded to the world, he sells off all his belongings and plans for his death date. However, on the 1st day, he meets Yashiro Heita as well as numerous other characters who will cause him to experience the most eventful 11 days of his life.

The story begins with the disappearance of a school bus and four high school girls. Still unsolved three years later, the case gets revived when one of the girls reappears. Odagiri plays a sharp national investigator searching for the truth behind the incident, which leads back to a seemingly peaceful town.

A woman has trained her ex-best friend's son to be her sexual slave for 20 years because her best friend stole her first love. What was meant to be revenge. Ending will come with great impact.

Physician Kohei Taguchi and Ministry of Health, Labor and Welfare investigator Shiratori soon become involved in major reforms to the death investigation system of the country and localities when a letter arrives threatening the destruction of Tojo University Hospital and Kerberos Tower in 3 months. Before the pair are able to uncover the truth, an unprecedented rash of suspicious deaths occur which can’t be explained through autopsy. On the day of the AI (Autopsy Imaging) Center’s opening and introduction of a revolutionary new MRI machine called “Leviathan”, further incidents rock the medical community.