http://futureisfailed.tumblr.com/post/161273363746

https://twitter.com/39tatsuo/status/273057394890768385

https://twitter.com/grossherzigkeit/status/750470213796110337

http://www.itmedia.co.jp/mobile/articles/1705/31/news145.html

http://japanese.engadget.com/2017/05/30/2-simply/

http://vrinside.jp/news/oculus-says-almost-all-new-rift-owner-bought-touch/

http://www.uuum.co.jp/2017/05/31/12289

http://news.denfaminicogamer.jp/kikakuthetower/wakagenoitari_1