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This suggests that "Dream Link" is a term used by the community to refer to the connection between the game's save data structure and its CG gallery. Modifying or replacing the "story.ini" file directly unlocks the gallery without needing to complete specific in-game challenges. The game itself has an official system for this: it introduced a "reset save" function that preserves any CG you have already unlocked. The "Dream Link" save file bypasses the game's natural progression to unlock everything immediately.