Ren Fujii is a normal student who just had a fistfight with his former best friend, leading him to break off their friendship. But with the help of his childhood friend, Kasumi Ayase, and upperclassman, Rea Himuro, he's gradually returning to his normal school life. Then a series of brutal murders in which the victims are decapitated begins to strike their city. Strangely, at the same time, Ren starts to have terrifying nightmares of being beheaded by a guillotine. But these are just a prelude to the painful and terrifying battles to come. (Source: Crunchyroll)

"The Shepherd," an urban legend of Shiomi Academy, is said to appear before hardworking students to grant them a wish. While engrossed in a book inside the school's renowned Great Library, Kyoutarou Kakei, a second year student and the Library Club's de facto president, receives an email from the Shepherd foretelling an event that will change his fate. Worried by the message, Kyoutarou rushes over to a nearby train station and encounters fellow student Tsugumi Shirasaki, whom he saves from being hit by a derailing train. Grateful for his heroic actions, Tsugumi joins the Library Club and invites Kyoutarou to participate in her mysterious "Shiomi Happy Project." Together with other new members of the club, they strive to make the academy a better place and uncover the identity of the enigmatic Shepherd.