planetarian: Snow Globe is a beautifully crafted kinetic novel that serves as a prequel to planetarian: The Reverie of a Little Planet. Presented much like an animated film or illustrated novel, it offers a single, unbranching story that follows Yumemi Hoshino, a devoted companion robot assigned to a planetarium in a suburban department store. Over time, Yumemi’s once-reliable routine begins to break down, leading her to ignore orders and abandon her duties. Through her interactions with fellow staff members, the narrative gently unfolds moments of warmth, hope, and the simple joys of everyday life in a near-future world.