Uncle from Another World

In every other isekai, the story ends when the hero defeats the demon lord and comes home. This one starts there. Yousuke 'Ojisan' Shibazaki wakes up from a 17-year coma, and his nephew Takafumi quickly learns that his weird uncle wasn't just unconscious, but he was living in a fantasy world called Gran Bahamal the entire time. He came back with real magic, zero social skills, and an undying devotion to SEGA consoles that the rest of the world moved on from in the late '90s. Naturally, they start a YouTube channel. The 13-episode TV series splits its time between Ojisan's flashbacks of his isekai adventures and the present-day reality of a middle-aged man trying to understand smartphones, modern internet culture, and why nobody remembers the Sega Saturn. The flashbacks themselves are where the parody hits hardest: Ojisan was genuinely transported to a fantasy world with beautiful elves and epic quests, but he was so socially oblivious that he fumbled every moment that mattered. He had multiple women clearly interested in him and didn't notice a single time. The humor is dry and specific rather than loud. If you liked the genre-aware comedy of Konosuba or the fish-out-of-water setup of The Devil is a Part-Timer, this scratches a similar itch but from a completely different angle. The retro gaming references are a bonus if you grew up in that era, but the real draw is watching an isekai hero who's fundamentally just a clueless uncle.