[Puzzle] My first hidden giveaway

Game on the table is:
Secret Ponchos (in form of a steam gift).

End time:
Saturday, Sept 26th (4 PM middle Europe, probably pre-noon in NA)

Requirements:
-Contributor Level 3
-you need to find and puzzle together the url to the GA
-15P

The only hint you get is:
Japan

Please bump the thread when you solved it and also if you decided to give up^^