An original story included with volume 10 of the Nakanohito Genome [Jikkyouchuu] manga.

Extra episode of Nagato Yuki-chan no Shoushitsu bundled with the limited edition of the 9th manga volume.

In an alternate universe, shy, awkward Yuki Nagato attempts to court her crush, Kyon, with the help of her best friend and neighbor, the perky and indomitable Ryoko Asakura. Together, the trio defends their high school literature club from extermination…and from the pestering of their over-the-top classmate Tsuruya and her friend and minion Mikuru. (Source: FUNimation, edited)

Second season of Muhyo to Rouji no Mahouritsu Soudan Jimusho.