...: File: Mirror__dlcs.7z

Find your game's installation directory (often in SteamLibrary\steamapps\common\Mirror ). Install the DLC: Move the extracted folders into the game's root directory.

Contains 48 high-resolution CGs that were not included in the base game (4 extra for each girl). File: Mirror__DLCs.7z ...

Depending on where the file was sourced, it generally includes the following official expansions: File: Mirror__DLCs.7z ...