Taki Nanami

Haruna Tsunematsu is studying folklore at university and she decides the subject of her graduation thesis will be the "Kisaragi Station" urban legend which has been a hot topic on the Internet since 2004.

Tsutsumi Takeru is a 4th year university student. He worries about finding a job after graduation. He currently works part-time at a bar called Double at night. He begins to write down his thoughts in a notebook that is used for work at the bar. During the day, the bar turns into the Cafe Double. Murakoshi Miyu works part-time at Double during the day. She is studying to become a nurse, which has been her dream. She communicates with Takeru through the notebook that is used at Double. While conversing about their hobbies and worries, they become closer and fall in love.

Asuka Miyazaki miraculously returned from the mysterious, otherworldly “Kisaragi Station” three years ago. Yet, she still looks as if she’s from twenty years in the past, drawing suspicion and isolation. When she meets a determined documentary director, she resolves to save Haruna Tsutsumi—who once risked her life for her—and others still trapped there. Boarding the train again, Asuka reunites with Haruna, unchanged from three years before, and steps back into Kisaragi Station.

The story revolves around a grand "impersonation" revenge plan carried out by the entire family against a businessperson who leaked a fabricated video of their second daughter engaging in "papa-katsu" (a form of compensated dating) with her male teacher, which led to public condemnation and her subsequent suicide.

This work depicts a "five" locked room mystery drama about two high school students, which develops in the first train in the early morning, the family restaurant after school, and the gondola of the Ferris wheel. A word that suddenly changes from everyday life to extraordinary, a psychological warfare on searching each other's minds. Youth, a fragile blue human figure, is depicted in a peculiar situation called a locked room.