Taxable income


(Guest)

I live in Tokyo. Earlier I worked as an Assistant Professor in a government university in adhoc position and drew full salary until 30 September 2013. Then I was unemployed from 1 October to 14th October and remain lived in India. I moved to Tokyo to accept a fellowship offered by Government of Japan which is non-taxable starting from 15 October 2013. So, could someone tell me whether do I need to submit income tax returns for 2013-14 financial years? In case if I need to submit income tax returns, since it is already late, may I know the procedure involved? 

Note: I will continue to stay in Japan until October 2015 as of now. 

Thanks in advance :)