The Truth of Tomorrow

Rein was an ordinary girl, with an ordinary life. Most of the time. She was the smartest girl in her class, significantly. Sometimes people around her believed she wasn't as smart as she was, and was always cheating. Eventually, even she believed it.
In the dreadful morning, she finds a book inside of her drawer that was never there before. Every morning she wakes up, she looks in the book, and finds new information that was not there before.
Together, Rein and her best friend, Hanna, test their skills to find who the author of this book is, and where they are.
Lies can appear anywhere, and everywhere. Rein will find lies where she will least expect it. What follows is sadness, and dread. However, the truth of tomorrow is revealed eventually.