I don't think you'll need to worry - Anu is a man of Indian descent, acting (assumedly) within the traditions of Hinduism and informed by the values of his culture, maybe massaged by the fact this story is set hundreds of years in the future. The fact that you, the writer, are (I presume) not of that culture isn't really at issue; it does mean you have to do some research, but I'm getting the feeling that you're already doing that. The larger, pointier, and more salient questions of (mis)appropriation come up in different contexts. :3