Episodes: 1Status: Completed
Alternate Titles: 境界の彼方 新作エピソードは＃0「東雲」
Bundled with seventh Blu-ray/DVD volume of Kyoukai no Kanata. Episode 0 happens two years prior to the TV series when the Nase siblings meet Akihito for the first time in a mission for Hiroomi. Mitsuki follows her brother on this mission and their goal is to subjugate Akihito.