Isekai Ojisan

After spending seventeen years trapped in a fantastical other world, a thirty-four-year-old uncle at last returns to modern-day Japan. His homecoming, however, is anything but ordinary: the man who comes back is shaped by a lifetime lived elsewhere, carrying the weight of those lost years and an unwavering devotion to Sega that neither time nor dimensions could erase. His nephew, Takafumi, finds himself thrust into the role of observer to this strange reunion. As his uncle readjusts to a world that has long since moved on without him, Takafumi witnesses firsthand what seventeen years of isekai life can do to a diehard Sega enthusiast—watching the effects ripple through everyday life, familiar faces, and memories both recent and distant. Weaving together the mundane rhythms of modern Japan with the lingering echoes of an extraordinary otherworldly existence, the story follows the unlikely pair as they bridge the gap between two very different worlds—and slowly uncover how one man's long absence touched everything, and everyone, he left behind.