She is the last passenger on the spacecraft.

She awoke at the end of a 300-year slumber──. When the girl Noah opened her eyes on the spacecraft, there was no one left. The AI tells her: humanity has gone extinct. The Earth, her family, everything has become the past. Before her, enduring the solitude, appeared a small silver-haired girl. To this girl who is like human yet not human, Noah gives the name Canon. But something else was also lurking within the ship. A phantom of humanity, or perhaps an artificial will? Living among the remnants of the past, Noah and Canon question what it means to be human, choosing a future that lies beyond extinction. This is the story of a journey among the stars that begins from an ended world, told by "the last of humanity" and "a girl who is not human."