Natsuki Andō, a high school freshman, planned to avoid after-school commitments by casually invoking the "going-home club" as a metaphor for her desire to head straight home. This ironic remark backfires, landing her in the actual Going Home Club—a group dedicated to unstructured leisure. Her serious, pragmatic nature contrasts sharply with the club’s whimsical chaos, positioning her as the deadpan foil to its eccentric members. She reacts to their absurd antics with bafflement or dry wit, her grounded logic clashing with their surreal humor.

Her background underscores an ordinary life shaped by practicality, including meticulous attention to maintaining her hairstyle. A fleeting mention of her younger brother catches clubmates off-guard, revealing a familial side they never contemplated. Though naturally reserved, she oscillates between observing the club’s madness from the sidelines and reluctantly diving into its activities, her participation highlighting the tension between her conventional instincts and the group’s carefree unpredictability.