During a winter walk, Natsume meets a snowman youkai who is searching for something she's lost and can't seem to recall and decides to help her despite not knowing what exactly she's looking for.

A new original animated story included on a bonus mail-order DVD eligible for readers of LaLa's August, October and September 2013 issues. It was later aired as a special in the broadcast schedule of Natsume Yuujinchou Go on the 16.November 2016.

In 1929, Ladd Russo spared Graham Specter's life and earned his unwavering loyalty. Three years later, Graham is infuriated upon learning that Ladd was pushed off the train after the events aboard the Flying Pussyfoot. As a man of bizarre yet passionate philosophies, he plans to make an offering to Ladd by kidnapping Eve Genoard and subsequently capturing Jacuzzi Splot, who has been living in the Genoard mansion with his gang. Meanwhile, Jacuzzi and his gang take in an unfamiliar woman, Elmer C. Albatross pays a visit to the prison to meet an old friend, and Czeslaw Meyer runs into the man he hoped he would never see again. These seemingly separate storylines merge, tying up several loose ends and revealing the whole truth of the anomaly that occurred aboard the Advena Avis in 1711. [Written by MAL Rewrite]