(This is for the route. For the item in question, see Mysterious Book.)
"I am fixing her mind. Once the words of the book are fully absorbed she will become a slave to the book, just as I am. Just as all women should." - Julia
The route description for the Mysterious Book ending.
It begins from when you give it to Julia.
Note that this is just a general outline for the route. It is not a walkthrough.
Giving Julia the Book
Julia's First Reading
The Protagonist meets with Julia in the library and gives her the book.
Julia remarks that the book seems to have a forebording atmosphere, but she can't place her finger on what it is actually. She decides to give it a read.
A short time later, the Protagonist returns, only to see Julia touching herself while reading it. The Protagonist asks if it's pornographic, but she says it's not. It simply does SOMETHING to her mind, but she's not sure about what.
The Protagonist asks why she haven't closed it - she says she came to that conclusion some time ago, but she can't physically put it down. The Protagonist can either take the book back or let her keep reading. If you choose the former, the book returns to your inventory. Otherwise, you can speak to her again.
Julia's Second Reading
The next time, she says she's still not sure about everything in the book, but she says that it seems to hold a firmer grip over her mind. Again, the Protagonist is presented with the option of taking it back.
The Protagonist, however, decides not to and lets Julia continue reading while s/he heads on home.
Ashley's "Reading"
At home, the Protagonist sees Ashley "reading" the book and touching her boob. Ashley says that "the book lady" gave it to her. She then asks if the Protagonist wishes to feel good together with her, but the Protagonist hurries back to the library.
Here, Julia has defaulted to her Slutty personality and now counts as your slave. The Protagonist confronts Julia about it and is given the option to let Ashley continue reading the book or retrieve it.
If the Protagonist lets Ashley continue reading the book, nothing further happens as of version 0.62. She will not count as your slave.
If the Protagonist takes the book back, Julia will flash the book for the Protagonist (if female) or simply hand it back (if male). She remarks that she'll gladly read the book again if the Protagonist wishes.
Nothing further happens there as of version 0.62.
Ashley's Reading
(This scene triggers if Ashley has her mind fixed).
At home, the Protagonist sees Ashley reading the book, openly masturbating and greeting the Protagonist. When the Protagonist asks how Ashley got the book, Ashley explains that Julia let her borrow it. The Protagonist realizes something is wrong and hurries back to the library.
Here, Julia has defaulted to her Slutty personality and now counts as your slave. The Protagonist confronts Julia about it, saying that they struggled fixing Ashley's mind. Julia explains that she gave it to Ashley so she, too, could become a slut, just like all women are meant to be. The Protagonist is then given the option to let Ashley continue reading the book or retrieve it.
If the Protagonist lets Ashley continue reading the book, nothing further happens as of version 0.62. She will not count as your slave.
If the Protagonist takes the book back, Julia will flash the book for the Protagonist (if female) or simply hand it back (if male). She remarks that she'll gladly read the book again if the Protagonist wishes.
Nothing further happens there as of version 0.62.
Giving Sarah the Book
If Sarah has 40 or more Affection, the Protagonist can give the book to Sarah. She'll read it and quickly turn into the Protagonist's slave, to the point she'll run up to the Protagonist completely naked and meet with him/her.
The Protagonist can tell Sarah that she is, in fact, not the Protagonist's slave, causing her to get somewhat sad but still hands the book back.
If Sarah already was the Protagonist's slave, the Protagonist just remarks this.
Regardless of outcome, the book is given back to the Protagonist.
Giving Jane the Book
At the end of most of Jane's classes, the Protagonist can give Jane the book. Surprised, she accepts the gift and begins reading it.
The next time the Protagonist meets with Jane, the book has taken complete control over her.
The Protagonist is Dan
If the Protagonist is Dan, Jane will read from the book and all the people in class are trapped to their desks. Jane gives all girls a potion to give one of the boys in class to change their gender to female. The Protagonist has to, multiple times, remark that he is in fact Dan and the one that's the rightful owner of the book.
Once everyone has been transformed, the class is full of willing slaves for the Protagonist to play with. This leads to the Mysterious Book NG+.
The Protagonist is Rosa
If the Protagonist is Rosa, Jane will be reading from the book. It'll quickly take control over the Protagonist's mind, causing a Bad Ending to happen. The book is given to an unknown male student in the end of the class, making him the new Master of the school.
The Protagonist is Rosa with a Charmed Sarah
If the Protagonist is Rosa but has charmed Sarah at some point, Sarah will grab a gender change potion and give it to the Protagonist, saying she's voting for the Protagonist to become their Master. Jane is baffled at this scene, but agrees to it and eventually, all of them are transformed into women for the Protagonist to play with.
Giving Julia the Book (Mysterious Book NG+)
To access this scene, you must have given Julia the book to read during a NG and then taken it back. Next, give it to Jane so it leads to the Mysterious Book NG+.
Once that's complete, re-obtain the book and give it to Julia again. Two new scenes will play out in that case.
When giving the book to Julia, she hints at knowing about the book from the previous timeline but doesn't say anything and instead simply reads.
When the Protagonist next meets her, she's openly masturbating when reading it. When the Protagonist asks why, she remarks that it's what you do when reading the book. She admits to being able to stop, but wants to become a slut for the Protagonist to enjoy, flatout saying that she was meant to be a slut.
If the Protagonist takes the book back from her, she'll tell the Protagonist to leave before she lashes out in anger.
Otherwise, when the Protagonist meets with Julia again, she'll refer to the Protagonist as Master/Mistress. The Protagonist asks as to why Julia is like that, if it's due to the book or something else. Julia explains she began reading the book very shortly after the Protagonist left it with her.
Julia next asks if the Protagonist wants the book back to enslave more women, the Protagonist can either agree or let Julia keep it, thus giving it to Ashley.
Trivia
- Despite Ashley should count as the Protagonist's slave whether you let Ashley be enslaved or not, this has yet to be implented.