Yōsuke Shibazaki, nicknamed "Uncle," is a 34-year-old man who awakened from a 17-year coma induced by a truck accident. While comatose, his consciousness traversed to Granbahamal, a fantasy realm where his haggard appearance led to constant mistreatment, often conflating him with an orc. Survival there demanded strategic ingenuity drawn from his encyclopedic knowledge of 1990s SEGA games, which shaped his tactical combat methods and resourcefulness. In Granbahamal, he mastered destructive magic and memory-altering spells, prioritizing rapid, overwhelming assaults using chained restraints and preemptive strikes. Social alienation followed him due to his looks and social ineptitude, though he unknowingly formed bonds with a tsundere elf princess, NEET swordswoman Mabel, and priestess Alicia—misreading their affections as mockery or quirks. Returning to modern Japan with retained magic, he grappled with unfamiliar technologies like smartphones and internet trends, while clinging to nostalgia for obsolete SEGA consoles. His nephew Takafumi housed him, leveraging his supernatural prowess for YouTube fame by filming spell demonstrations and tales of his otherworldly exploits. Socially oblivious yet unintentionally compassionate, he erased distressing memories to preserve his psyche, leaving fragmented recollections of Granbahamal. Initially aloof, he later acknowledged reliance on allies like the elf princess during pivotal battles. In Japan, his childlike enthusiasm for gaming merged with pragmatic magic use for chores like grocery procurement. Subtle growth emerges as he retrospectively values fragments of positive Granbahamal memories, despite earlier urges to forget. He tentatively embraces non-SEGA gaming and nurtures a familial bond with Takafumi and Sumika, though romantic cues still elude him. His journey weaves trauma resilience with deadpan humor, framed by his identity as a retired isekai hero straddling two worlds.