Thank you for your kind words @mirrors. It just so happens that I am thinking on similar lines regarding the future of the story, so let me share a few more details on that.
The inspiration for this piece came from a short story called The Last Answer by Isaac Asimov. In the story, a person dies of cardiac arrest and his soul meets the Creator, who explains that a soul is nothing but a nexus of electromagnetic waves, and that he (the Creator) picks certain individuals who continue to survive as souls for the purpose of discovering new knowledge, which the Creator admits he could himself do but is not interested in doing so. I won't reveal what follows, because it is an interesting conversation and I would recommend you to read it yourself.
I picked up the concept of a soul being constructed of electromagnetic waves, and since electromagnetic waves can travel at light-speed, I plan on my characters being capable of making interstellar and intergalactic journeys. The larger story is going to be a science fiction novel which would include alien creatures as well (I see the possibility of three volumes), but I'm taking it very slow right now. Hopefully I get the correct ideas to write it soon.