I agree.
Ever since I started the game too much syncs up with stuff from the first game. And the MC of OIAL was heavily implied to have just given up on the book. I don't think he has it. His life was going so well, he likely was distracted by his god-tier harem to make sure that the book was never stolen. Some scenes even implied it was just left out in the open. So yeah, someone has it. Or hell, maybe the MC of OIAL is the person who made Eternum and the company is made super successful by using the book.
Idk if they're the same person but stuff I'd implied to be the same with them. Harems. Cults in newspaper running amok. Awkward obsessions with things most people would shy away from. Like a game with corruption on the level of Las Vegas or a cult of psychos killing people. So for all we know the main char made the game, played it to test it, got bored with it being to EZ and made the game wipe his memory so he had to go in blind to win at the game the hard way as a rookie. Only to find he lost control of the game and now doesn't know that he has it wipe his memory in the first place. Meanwhile people are now playing the game and it's out of control.
Who knows what the hell is going on?
But i know I want the heroes of the game to focus on the real problems and not just dick around. Those gems of doom and this power struggle with the people in the game seems like a distraction to the real problems. Why did the company make a game like this at all that is a cesspool for evil and a quick way to get sued?