You need to explain to your wife you're playing video games?
I think it would be best if you hadn't to justify your hobbies, but I don't know your situation so here it comes:
The overarching story (which is not what is most interesting about the writing) is about a goddess and an evil closed in a divine box. Some agent of the devil whispered curiosity in the ears of the goddess, and so she opened "pandora box" and set the devil free. This is, as far as I understood, the "original sin". It's more or less a reference to Adam and Eve story I guess, but it's very loose.
The overarching story is really muted in this game however. You could easily get rid of the goddess stuff without changing much of the game practical story (I even think it would improve the game). One thing that is more central is Soul-forging, but I don't know if you want to have to explain that one either xD
What's the problem between your wife and the original sin by the way? She doesn't like it when your priest talks about it, if ever you're a believer? (if you're not this is ridiculous)
Last edited by Chrest; 23/08/16 03:36 PM.