Higashi no Chihei, Nishi no Towa (続・11人いる！東の地平・西の永遠, "They Were Eleven, Continued: Horizon of the East, Eternity of the West"), serialized in Bessatsu Shōjo Comic magazine from 1976 to 1977.

As the days pass, the eleven cadets must deal with their suspicions of each other as well as the sudden knowledge that the spaceship is in a decaying orbit around a star, which is causing the temperature on the ship to rise.

[2][3][4] Shogakukan collected the individual chapters, along with three unrelated short stories by Hagio, into a single bunkoban volume published on July 20, 1976.

[11] Viz Media originally licensed the series for an English-language release in North America, published in the now out-of-print anthology Four Shōjo Stories in 1996.

Higashi no Chihei, Nishi no Towa (続・11人いる！東の地平・西の永遠, "They Were Eleven, Continued: Horizon of the East, Eternity of the West"), was serialized in the December, January, and February issues of Bessatsu Shōjo Comic magazine in 1976 and 1977.

[11] In 2021, Denpa licensed the sequel series for an English-language release in North America, set to be published in the fourth quarter of 2024.

[14][15] A 45-minute live-action television film adaptation of the manga was broadcast in Japan on January 2, 1977, as part of the NHK's Shōnen Drama Series.

It starred Atsushi Abe as Tada, Kazutomi Yamamoto as Frol, Kōsuke Toriumi as King Mayan Baceska, and Daisuke Kishio as Doricas Soldam IV.