Symptoms

I would like to understand how we can use different regional languages viz. Japanese, Canadian French etc. on K2 Blackpearl. Is there any regionalization available with K2 Blackpearl? We would like to use it for K2 for SharePoint and K2 Designer.
 

Diagnoses

K2 language package is only used with K2 Designer and DEV tools. SharePoint 2013 uses the browser language preference.
 

Resolution

You do not need a language pack to be installed on K2 to identify the language you have defaulted in the browser language preference.

So for example, if you have Japanese setup in SharePoint as the default browser language, K2 Forms/Workflows will render in Japanese.

The K2 language package is used locally for Designer and DEV tools only... It does not effect the way you have your language setup in SharePoint 2013.

Currently, K2 language package has 5 supported languages. Here is the more specific information: http://help.k2.com/kb001695