Execute the following file to start DLC.
[windows]C:\Program Files\Steam\SteamApps\common\Hentai I'm coming!\gallery\win\Game.exe
[mac]C:\Program Files\Steam\SteamApps\common\Hentai I'm coming!\gallery\mac\Game.app


This DLC is a gallery mode for game events only.
You can see sexy illustrations and animations without having to complete the game.

Method of operation:
Select a girl in the title menu.
You can immediately see the erotic event.