Spotting

it is common rice swift.

I told you...it was just a guess...OK, now check Pelopidas mathias, commonly known as the Dark Small-branded Swift,
Positively my last guess on this one.

Thanks for the suggestion :)

Definitely not grass demon. This one was way smaller(it's sitting on a small curry leaf- this might give u an idea of how small it is-almost the same size of a chestnut bob)

I have spotted grass demon b4 http://www.projectnoah.org/spottings/185...
They r much larger compared to this one.

Check Grass Demon (Udaspes folus)
https://en.wikipedia.org/wiki/Udaspes_fo...
Good luck with this guess of mine.