It may sound somewhat bizarre but it is all about the 2011 Japan Earthquake. You all know how tragic it was. Communication was disrupted, major damage was caused to many buildings, roads and transportation systems. In such situations cell phones still work but service is sketchy. Data works better than voice. This was the impetus to my colleagues at NHN Japan to design an app accessible on smartphones, tablet, and PC, which would work on data network and provide continuous and free instant messaging and calling service.