Ep. 1: Ataru steals Ten's imagination-granting gum and accidentally hits Lum with a rice cooker

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Ataru takes Ten's special bubble gum, which has the power to manifest anything the user imagines while chewing and blowing bubbles. During the incident, he accidentally strikes Lum on the forehead with a rice cooker. This impact causes Lum to lose her memory of speaking Japanese. Consequently, she can no longer communicate verbally with the other characters, leading to confusion as everyone fails to understand her attempts to speak. The situation arises directly from Ataru's theft of the magical gum and the subsequent accidental injury inflicted upon Lum.