Daitoshokan no Hitsujikai (大図書館の羊飼い, lit. "Large Library's Shepherd" or "The Shepherd of the Great Library") is a Japanese adult visual novel developed by August and released on January 25, 2013 for Windows PCs as a DVD. There have been five manga adaptations based on the game published by ASCII Media Works, Ichijinsha, Kadokawa Shoten and Media Factory. Comic anthologies and light novels were also published, as were several music albums. An anime adaptation produced by Hoods Entertainment aired between October and December 2014.
Set in the vast and prestigious Shiomi Academy, Kyōtarō Kakei is a student and the only member of the Library Club (. When Kyōtarō was young, he aspired to read all the magic books in the world which were kept in the magic library. To gain access, he acquires a bookmark, which is an entry ticket to the magic library, and he must show kindness and bring happiness to everyone's hearts. Being the sole member of the Library Club, he enjoys the fact that he can read peacefully by himself. After receiving a text from the 'shepherd', which reads his fate is going to change, Kyōtarō encounters a second-year girl named Tsugumi Shirasaki, whom he saves at the train station. Later that day, Tsugumi enters the Library Club, she thanks him, and asks for his help to make Shiomi Academy a more enjoyable place. Like Kyōtarō, Tsugumi has also received a text from the shepherd. With the shepherd's guidance, more students end up joining their group.