The First World Line also called Original World-line is the world where the 'Three Ways to Survive in a Ruined World' began, and the place where Kim Dokja become 'Oldest Dream' and Han Sooyoung become 'Tls123'.
It is a sacred world line that even Dokkaebi King forbidden from entry. A world where intricate galaxies of Stories crafted, thing called 'scenario' in world created and perfecting the world of pure contradictions where the result gives birth to the cause, and the cause becomes the result.