Basically, it's about a young girl who goes on adventures doing various things. Like "Ginny Anderson and the Strawberry Crisis". And various other ridiculous titles.
The first book has about 1020 pages. And it keeps on getting more - the final book has 10696 pages ("Ginny Anderson and the End of Existence"). The author, R.K. José-von Karma, is somehow a trillionaire (if not richer than that).
Serenity finds the books boring, though. (The plots are ridiculous - seriously, trying to stop a madman from eating all the strawberries which would otherwise lead to some kind of crisis?)

There will also be books by Lunadine "Luna" von Terra (who appears in the mod) and books related to Invidia (in beta 2 of version 3) and Arcanum (newly added) as well as Misery's End (currently being added).

I doubt Bloody Tears will be in version 3, though I'll just remain patient.

The second-last boss starts off easy (50 HP for 7 forms, all of which are the same) and is similar to the maids from the Servant Quarters. Easy to dodge, and so on; those spikes and blocks above them aren't there.
Then, after that, the boss teleports away and reappears on-screen and the final form (300 HP) will be battled. (I have a lot of trouble with the last form, if only due to using only a level 1 Misery's End and nothing else.)