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The story begins in the early Showa era of the 20th century. A mysterious old man on a train relates the disappearance of his older brother three decades ago, near the 12-story Ryouunkaku tower that once stood in the seaside town of Uozu, Japan. The mystery revolves around telescopes, peep shows, and the blurred boundary between reality and dreams.
"After Yuu finds out the past and circumstances of Adachi, he makes a single decision in order to save him."
The normally sleepy town of Inaba has recently fallen prey to a string of bizarre deaths, where the deceased are discovered dangling from TV antennae and telephone poles. But that’s not the only mystery that’s cropped up lately: the "Midnight Channel" has gained notoriety in the local high school for allegedly revealing a person's soul-mate to them. When transfer student Yu arrives in town, he quickly becomes enmeshed in the center of all these mysterious goings-on, especially after the teen and his friends are pulled through the television into another world! How is this strange place connected with the other mysteries plaguing Inaba?
Clumsy, good-natured Saya lives a happy life surrounded by her classmates, her admirers, and the loving guidance of her father, the priest of a shrine. But mysterious, bloodthirsty monsters have begun to appear, and as the daughter of the shrine, Saya is tasked with keeping the village safe – even if it costs the girl her life. Now, between her schoolwork and friendships, Saya must pick up the sword and keep these brutal creatures at bay. Will Saya be able to return to the quiet life she once knew?
During the month of October of his third year in high school, Koyomi Araragi is introduced to a transfer student named Ougi Oshino by his underclassman Kanbaru Suruga. Ougi tells Koyomi that she has something she wishes to consult with him. When she draws the map of Naoestu High School, she finds something peculiar on there. This discovery reveals a tale that wasn’t meant to be told, and this makes Koyomi’s high school life totally different. This is the story that brings to light “what” makes Koyomi Araragi. This is the story that reveals the “beginning” of everything.