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https://izupen.com/2016/12/03/%e3%80%8ewhy-learn-with-izu-pen%e3%80%8fizu-pen%e3%81%ae%e3%82%bb%e3%83%83%e3%82%b7%e3%83%a7%e3%83%b3%e3%81%ae%e7%89%b9%e5%be%b4%e3%81%a8%e3%81%af%ef%bc%9f/
『Why learn with Izu Pen?』Izu Penのセッションの特徴とは?