S1.E3 ∙ Yakusoku

Follow the trajectory of the flag recapture operation interviewed by battlefield photographer Saeko Hakushu.

Set in the Shoryaku and Chotoku eras of Japan's Heian period, the animated short Kai Doh Maru is set against a background of a capital under threat from disease, outlaws, and political plots. The story reworks themes from Japanese folklore, focusing on the relationship between Sakata no Kintoki (Kintaro) and Minamoto no Raiko, one of the first military Minamoto and "monster hunter" of folklore. The story replaces the traditional image of Kintaro - a strong, ruddy-cheeked man - with that of a determined, tomboyish girl, while retaining much of the traditional character such as the carrying of an axe. Other historical figures from the period who have also become objects of folklore, such as Fujiwara no Michinaga and the rebel Taira no Masakado also make an appearance.

Three friends who work as space Couriers help a creature called hydra in a form of a human woman and protect her from the evil men after her.

Kasahara Iku and Dojo Atsushi receive an emergency recall in the middle of their date as Japan is rocked by a terror attack. Their new duty is a protection detail assigned to Touma Kurato, an author. Meanwhile, the relationship between Librarians and the Media Purity Committee is also worsening. During yet another hostile confrontation, Dojo is seriously wounded. Although Kasahara is badly flustered by this turn of events, Dojo still sees fit to entrust her with Touma's protection.