They Were 11!

Ten elite space cadets, from different races spread across the galaxy, are assigned to board a decommissioned spaceship as their final test. Their orders are to survive as long as they can with what they have. Once in the ship, they find that their crew has gained an eleventh member. Given the circumstances of the cadet selection process and how rushed the exams were, no one can remember the original members well enough to
recognize which is the new face nor how they got there.

As the days pass, the eleven must deal with their suspicions of each other as well as the sudden news that the spaceship is in dire straits.

Winner of the 1976 Shogakukan Manga Award, They Were Eleven is heralded as one of the turning points in shojo manga history for its prespectives on the sci-fi genre and gender roles.

Moto Hagio (1949-) was born in Fukuoka, Japan and is widely
considered as one of the pioneers of modern shojo manga (girls manga).
One of the most beloved Japanese comic artists of all time, and has
penned dozens of works over a wide range of genres throughout her nearly
fifty year-long career. Easily one of the most critically recognized
comic artists over the last few decades having won a number of awards,
Hagio’s works challenge concepts of gender and humanity. In the realm of
science-fiction is a three-time winner of the Seiun Award, the Japanese
equivalent of the Hugo Award. In 2006 she took the Japan SF Grand Prize
for her fantasy title Otherworld Barbara (Fantagraphics). And in 2010
she was recognized by San Diego ComicCon International with an InkPot
Award after her release of A Drunken Dream (Fantagraphics). A national
treasure in Japan in 2019 Hagio was recognized as Person of Cultural
Merit by the Japanese government.