If Sekai Camera does not start, please try following steps after you install the application.

1. Update your OS
   Sekai Camera requires iPhone OS 3.1 or later. You need to update iPhone OS to the latest version if it is prior to 3.1.
   To check your version, choose Setting > General > Version.
   You can refer to the Apple web site to update your iPhone OS.
2. Restart your iPhone
   Restart your iPhone even if you use the latest OS and Sekai Camera does not start.
   To turn off your iPhone, hold down sleep/wake button for a few second, and run the slider across the screen.

If this step does not resolve the issue, please contact the support center via e-mail.