Name: The Everlasting lovestory at the Windcap (Steam)
Brand: 百歌CentChansons
SKU: KT-DC35BE62C2
Price: 5.15 EUR
Availability: InStock

I was abandoned by the world, and she was forgotten by time. They are attracted to each other because of loneliness, and cling to each other because of misfortune. The happy fairy tale weaved by the two eventually turned into a desperate curse.

Redeem on Steam

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Step 1: Open Steam and sign in.
Step 2: Open the Games menu, then choose Activate a Product on Steam…
Step 3: Enter the key and follow the prompts.
Step 4: The game appears in your Library.

Steam's redeem page Full guide for Steam

Activation notes from the publisher

Go to: http://store.steampowered.com/ and download STEAM client Click "Install Steam" (from the upper right corner) Install and start application, login with your Account name and Password (create one if you don't have). Please follow these instructions to activate a new retail purchase on Steam: Launch Steam and log into your Steam account. Click the Games Menu. Choose Activate a Product on Steam... Follow the onscreen instructions to complete the process. After successful code verification go to the "LIBRARY" tab and start downloading.