By the way, I won't bother with it for my first playthrough, but might as well ask it now, is the IV/EV system identical to Pok?mon? Like, down to IV inheritance and all that stuff.
IVs at randomized and indicated by a rank from E- to S. S being the highest.
You get PP after each battle, these are basically your EVs but you get to pick which stat to distribute them later. You use them to learn skills and change your active ability as well.
I'm not sure what you mean by inheritance, but take a look at the reincarnation system. Its basically a simplified breeding system without the egg running from what I've seen so far.
Next question:
How do you even download this? I can't understand the site it's in Japanese. Clicking what I assume to be the download link takes me to Melonbooks and then I get lost.
You buy it from melonbooks for 2700 yen. About 22-23 USD.
I believe there was some problems with it so I'm not sure if they put it back up for purchase yet.