Microsoft, DMM and Amazon Japan made a new collaboration in Japan. From this week you can buy your Xbox Live Gold Membership from the Amazon Japan with DMM Points too.
To celebrate to new service you can buy with 5% OFF your Xbox Live Gold Membership and with 3% OFF your DMM Points until October 31, 2016.
More information can be found in here: https://www.amazon.co.jp/b?node=4744811051