I was curious if I purchased the second book here, would I be able to play it still? I have the rest of the entire game through steam and I'm trying to figure out which it a safer bet. I would preferred buying the entire thing here but I don't want to have to rebuy all the other parts since I have everything including prologues already on steam. Does the steam version also include the epilogue? Like is that part of book II or is that just an Itch.io bonus kind of thing?