The vast sky is populated with a great many stars on which most of the inhabitants have fallen into a deep sleep, called simply the “Slumbering Stars”. This is the story of a traveler of the stars, a worker for the Planetarium Ghost Travel Company (aka. PGT) named No. 303, as he spends his time visiting those sleeping stars in an attempt to preserve the memories and culture their peoples have left behind. Would you care to join No. 303 on a journey into the quiet night? --- Ranked No. 5 on the 2023 Kono Manga wa Sugoi! for manga written by women.