Walking through a gateway or becoming trapped inside a video game.
If you are looking to write or understand an isekai narrative, most follow a structured progression known as : Isekai
The protagonist adapts. This phase usually highlights their "cheat" skill—a unique power or modern knowledge that gives them an edge over the locals. Walking through a gateway or becoming trapped inside
Dying in the real world (often via a vehicle accident, nicknamed "Truck-kun") and being reborn as a baby or a new entity in the fantasy realm. Isekai
Being pulled into the new world by magic, often by a kingdom in need of a "Hero".
: Focuses on kingdom-building and a non-human protagonist.