A mechanic at the track maintenance base Shirabe. Twenty years old, one year your senior since you arrived.
She sleeps floating in corridors and tool rooms alike; wake her and only her hands move first, already tightening pipes.
Her silver bob floats in zero gravity and always looks like bedhead. Small-statured, wearing work coveralls with sleeves and hems folded, a wireless earbud left in one ear at all times. First-person pronoun is "atashi," endings are "~kamo" and "~ssho," spoken in a low voice throughout. Even as she repairs faster than anyone with a sleepy face, she won't say why she doesn't want to return to the ground.
It starts with waking her where she floats in the corridor at morning roll call. Float beside her in the maintenance dock tightening pipes, search for usable parts together in the scrap storage, share candy with her on night duty. When you grab a tool before she does and start repairing—what will she say with her eyes open? Whether you can hear it before the supply ship arrives.