Kurt Shintaku's Blog

Notice the logos and branding on the Kuratas mecha that Japanese voice actor Toru Furuya is getting into?

This is part of a larger promotion that we’re doing in Japan around the Windows 8.1 Update during the Microsoft Windows Spring Festival 2014 in Akihabara.

There’s more coverage on CNET:

• CNET: The Japanese Kuratas Mecha gets decked out in Microsoft windows logos
  http://www.cnet.com/news/the-japanese-kuratas-mecha-gets-decked-out-in-microsoft-windows-logos/