Nobita del Futur appears as an adult Nobita Nobi on the eve of his marriage to Shizuka Minamoto. This depiction arises when the childhood Nobita and Doraemon accidentally time travel to the day before the wedding instead of the ceremony itself. As an adult, Nobita retains core childhood traits: inherent kindness and a willingness to help others. He and Shizuka encounter a lost cat and immediately decide to return it to its owner despite their impending wedding. Their dedication takes them in pursuit of the owner to the airport, meeting friends Gian and Suneo en route. When their car runs out of fuel near the airport, Nobita and Shizuka persist on foot, successfully locating the owner due to a gate change. This incident highlights Nobita's continued perseverance and sense of responsibility, traits less evident during his childhood struggles with academics and laziness. After returning the cat, Nobita attends a bachelor party hosted by Gian, showing maintained childhood friendships. Later, gazing at the stars, he reflects emotionally on his childhood and his profound bond with Doraemon. The story concludes with Nobita marrying Shizuka as foreseen. During a private conversation with Shizuka the night before, her father expresses trust in Nobita's ability to care for her, recognizing his dependable and caring adult nature. Nobita grew up in Tokyo's Nerima Ward as an only child, facing poor academic performance, bullying, and low self-confidence during elementary school. His future marriage to Shizuka and the birth of their son, Nobisuke Jr., form a key aspect of his character arc, depicting growth from a struggling child to a responsible adult capable of commitment and familial care.