Reincarnated as a Passerby NPC, I Became an Outsider in the Deduction

After clearing the hidden ending of an unpopular medieval RPG, Lin Mo woke up in the border blacksmith shop and became the unemployed apprentice who had just died of illness last night. There is no panel and no file loading. All he could rely on were the terrain in his memory, the habits of monsters, and a body judged to be blank by all professional crystals. When the first person who was supposed to die was saved by him, the familiar plot began to deviate. And at the end of the world, a certain being discovered for the first time: this passerby was not in the destiny it had written.