In the distant past, an ultimate catastrophe called "Entropic Silence" erupted in the multiverse. The vast majority of parallel universes have completely died and turned into eternal nothingness. There are only a handful of worlds left that are slowly heading toward destruction—these are the "eternal ruins."
The "Seventh Survivor Civilization" where the protagonist lives is the last isolated island of mankind. It is not a paradise, but a giant sanctuary with depleted resources and numerous internal factions. In order to keep civilization alive, the sages left a legacy - the "Tinder Project".
