Cassiopeia

Cassiopeia is Professor Hora’s tortoise, but she is more than a companion carried along by other people’s plans: she communicates through words appearing on her shell, sees exactly thirty minutes into the future, and acts on what she knows. Her foresight becomes a practical force in Momo’s struggle to evade the Men in Gray, while her decisions to return to Momo and accompany her give that assistance the character of loyalty freely expressed.

Identity and Foresight

Professor Hora explains that Cassiopeia can see into the future, but only within a short range: she knows with certainty what will happen in the next thirty minutes. When he first describes the interval as half an hour “or thereabouts,” the word “CORRECTION!” flashes on her shell. He revises his claim: the interval is precisely half an hour. The exchange establishes both the exact limit of her ability and her capacity to correct someone speaking about her. Cassiopeia is not merely an object of Professor Hora’s explanation; she can make her own knowledge legible and insist on its accuracy.

Her shell is her medium of communication. Its messages allow her to answer questions and make declarations without speaking aloud, and the narrative repeatedly treats those messages as consequential rather than decorative. The precise future she perceives is also narrower than broad prophecy: she knows what will happen shortly, including whether she will encounter the Men in Gray. The plot makes that restricted range useful through immediate choices and movements, rather than presenting her as someone who can explain distant events or determine the whole course of the story.

Recognition and Return

When Momo is separated from Cassiopeia, she wonders whether the tortoise has already found her way back to Professor Hora and hopes she is no longer searching. At that moment, something nudges Momo’s bare foot. Cassiopeia is there, and the words “HERE I AM AGAIN” appear on her shell. The return turns Momo’s worried speculation into a reunion, announced in Cassiopeia’s own written voice.

Momo immediately picks her up and hides her under her jacket, looking around for the Men in Gray. Cassiopeia kicks and struggles to get free; Momo whispers, “Please keep still!” The scene gives their reunion a practical urgency, but it also preserves Cassiopeia’s physical response: she is not simply a convenient object for Momo to carry. Her later words make clear that she has her own reason for staying near Momo, rather than being present only because Momo has taken hold of her.

Choosing to Accompany Momo

When Professor Hora asks whether Cassiopeia wants to go too, her shell spells “OF COURSE,” followed by “SOMEONE HAS TO LOOK AFTER HER.” Momo and Professor Hora smile at each other. Cassiopeia’s answer presents her as a participant in the decision and frames her companionship as care for Momo. The affectionate exchange does not erase the practical imbalance between them—Momo is the child facing danger, and Cassiopeia is a tortoise—but it gives their partnership a clear reciprocal dimension: Momo protects and carries Cassiopeia, while Cassiopeia intends to look after Momo.

Her statement also links the domestic language of looking after someone to the larger danger surrounding Momo. Cassiopeia does not claim to control what lies ahead; her gift reaches only thirty minutes forward. Instead, she accompanies Momo into uncertainty with a capacity suited to the next move, the approaching pursuer, or the immediate danger. Her presence is both personal and useful, without reducing their connection to usefulness alone.

The Chase and Her Narrative Role

In the tunnels, Momo zigzags to elude the Men in Gray, who know the maze better than she does. Cassiopeia contributes through anticipation: although she can only crawl, she knows in advance where Momo’s pursuers will go next and gets there first, positioning herself in their path. They trip over her and fall; those behind them tumble over the fallen pursuers. The resulting confusion helps Momo avoid capture more than once.

The action makes the contrast between Cassiopeia’s slow body and her quick knowledge central to the chase. She cannot outrun the pursuers or keep pace with Momo, so she turns the narrow margin of her foresight into an obstacle they do not expect. The tactic is not without cost: flying feet often send her hurtling against walls. Even so, nothing deters her from continuing to do what she already knows she will do. Her persistence makes foresight more than a clever advantage; it becomes committed action on Momo’s behalf.

Cassiopeia’s part in the pursuit also changes the apparent scale of the contest. The Men in Gray have the numbers and know the tunnels, while Momo is trying to escape through a maze; Cassiopeia’s limited but exact advance knowledge repeatedly disrupts their movement. The passage does not make her the sole cause of Momo’s escape, since Momo keeps moving and eluding them, but it makes Cassiopeia indispensable to the repeated near-escapes. Her combination of written speech, precise foresight, physical vulnerability, and deliberate care gives her an independent presence within the rescue narrative: she helps not by becoming human or powerful in the same way as her companions, but by acting through the capacities that are distinctly her own.