If you can read Japanese, Google translate is horrible ...
http://www.okwave.co.jp/news/press_log/2016/0104.html
http://itpro.nikkeibp.co.jp/atcl/news/15/010304207/?

Another Mijin partnership with okwave.jp, huge web portal.

Seems okwave is testing the blockchain for login authentication.

If someone who reads japanese can sum up those press releases would be nice.