Oops, sorry!
This item is currently unavailable in your region
This group aims to cover the games that are regionally restricted in Japan. Such games are locally termed as "omakuni".
The main focus being on those that are incorrectly displayed as available in the store through banners, new release listings, and search results, etc., despite Valve being informed numerous times over the past year of this problem.
https://steamcommunity.com/groups/omakuni_jp
おっと、ごめんなさい
この商品は現在お住まいの地域では販売されていません。
このグループは、日本国内で地域的に制限されているゲームをカバーすることを目的としています。このようなゲームは現地では「おま国」と呼ばれています。
Valve は過去 1 年以上にわたり、この問題について何度も通知を受けていたにもかかわらず、バナーや新作リスト、検索結果などで、ストアで入手可能であると誤って表示されているものが中心となっています。
https://www.deepl.com/translator#en/ja/Oops%2C%20sorry!%0AThis%20item%20is%20currently%20unavailable%20in%20your%20region%0A%0AThis%20group%20aims%20to%20cover%20the%20games%20that%20are%20regionally%20restricted%20in%20Japan.%20Such%20games%20are%20locally%20termed%20as%20%22omakuni%22.%0A%0AThe%20main%20focus%20being%20on%20those%20that%20are%20incorrectly%20displayed%20as%20available%20in%20the%20store%20through%20banners%2C%20new%20release%20listings%2C%20and%20search%20results%2C%20etc.%2C%20despite%20Valve%20being%20informed%20numerous%20times%20over%20the%20past%20year%20of%20this%20problem.
DeepLさんが、しっかり「おま国」と翻訳してて草