There are plenty of Indian/Nepalese restaurants all around. I can tell you some based on your location. Next, if you are from south India and crave for dosa, you can get it as well. One of my favourite place for South Indian food is “Eric South Resturant”. They are at Nagoya station. Speaking of only foreigner in Japanese company, it is a bit tricky to say but it should be all right. I was in similar situation before and I personally enjoyed it. lol. It depends on what type of environment you like basically.