The Anime Lad
Shin comes from an online game that trapped its players inside a lethal virtual space. Instead of returning to ordinary life, he reaches a world resembling that setting five hundred years later. His abilities remain useful, but the place has acquired centuries of history without consulting him. The adventure begins with a well-equipped stranger discovering that familiarity is not the same as current information.
Super Eyepatch Fox
Follow Shin from a lethal online game into a fantasy world five centuries beyond the setting he remembers. He carries exceptional strength and old knowledge, while the people and history around him have moved on. The opening makes a capable swordsman into a newcomer whose most basic assumptions may need checking.
Gigguku
Shin knows the game setting, but the world he enters has lived for five hundred years beyond that knowledge. That gap is the exciting part. Familiar places can have unfamiliar meanings, old rules may no longer answer every question, and raw strength cannot supply missing context. I want to see him inspect everything because every remembered detail now has centuries of possible history behind it!
Father's Basement
An exceptionally strong swordsman entering a fantasy world is hardly starved for genre company. The useful complication is temporal. Shin recognizes the setting, yet five centuries separate his knowledge from the world in front of him. That makes information less reliable than power and gives exploration a practical purpose. He may be capable, but he is still working from an obsolete manual.