Have lore books and forbidden scrolls not been added from Mary onward? I didn't see any in her realm, just the shard stash puzzle, and Rosita's realm seems to be empty of them, too.
Losing to Mary 10 times was tedious and unnecessary. That's long after you've seen everything she has to offer; there's really nothing to justify fights 6-10 rather than approaching Llavanya immediately after seeing that her help was too paltry (again). Especially considering it wasn't actually and I was able to beat her from fight 5 onward.
The game has a lot of issues. First time I played it (well, after a few years, don't remember way back) I picked the defensive class, whatever it was, the one that you could use a halberd. Halberds are bad, enemies in the 2nd realm ignore defense anyway, and the mastery skill does no damage and doesn't work anyway. So I replayed and picked Duelist, had to lose tediously to Mary, watched the terrible rape and abuse of a woman (I'm playing a femdom game, you think I like seeing women be abused?!?!?), played through the next few and had more tedious forced losses and walking around big areas, then once again forced to watch more abuse. I noped out at that point and thought maybe there was a way to actually beat Mary without having to lose/sellout Llavyana. I picked the Arcanist this time and blew threw everything until again forced losses to Mary. And apparently it can't be progressed without losing, only one route possible. If you're only going to just make one route, speed it the fuck up and don't even waste time with battles, use the (in game) cut scene to do it.
I mean it's his game, he can make it any way he wants and all that. I just personally don't understand why anyone would play a femdom game, with a male MC at that, only to sell out and have your patron woman get abused and raped. Why not just play a maledom game, skip the extra steps? Or a regular lezdom game? What is the purpose of the MC in this game? And of course beyond that, why waste all the time? Just make it efficient and tell the exact story you want smoothly and properly. Even if it's dumb at least cut out the extra time filler and just make it clear and fast.
I want to make it clear again, it's his game and he can do whatever. But I also have a right to voice my own opinion and that's my 2 cents.