Akira Fujiwara, a 48-year-old corporate drone, felt suffocated by the grind of his mundane job. Seeking escape in alcohol, his days off blurred in a haze of unfulfilled dreams. One fateful night, stumbling home drunk, he was hit by a speeding truck. As he lay dying, memories of his carefree childhood flashed before him—days of laughter and freedom. Lost in nostalgia, he slipped into unconsciousness, unaware that his next existence was just beginning—as a newly formed sperm, setting off on a strange, uncharted journey.