I think you need @Sinapse' help
He's like the one of the more vocal pua's around these parts
Even though I think OP could use some tips and practice, there's only so much that can be done to improve someone's social skills - at the end of the day, Japanese girls are still very prejudiced towards Indians.
Of course, some will be more open minded, but if you asked many, many Japanese girls whether they would date black or Indian guys, the majority would say no.
With regards to foreigners, they are definitely more open to dating Asian or white guys.
I guess my question to OP is if he wouldn't mind dating an Indian girl on the side.