The difference between TLJ and Culpa Innata is while TLJ took place in a normal world and a magickal world, Culpa Innata takes place in the normal futuristic world. TLJ is about April and the story she experiences, while Culpa Innata is a CSI? type game, set in a futuristic world.
The idea etc. may be somewhat the same, but the design & the story in both games are tremendously apart, I think. Just for comparision the story that J.K. Rowling has told, has been told to us a million times, just like the story about the 'galaxy far far away' has
The point is that there only seems to be about 7-8 basic stories in the world, it's the design and telling of the story that's different.