Former name (before reincarnation): Motosu Urano (本須 麗乃)

Originally a young woman from our world who just finished her studies to become a librarian and died buried in her own books after an earthquake caused her bookshelves to fall on her, she found herself reincarnated in a very frail body of a 5-year-old young girl called Myne in a fantasy world.

She loves books above everything else and living a quiet life surrounded by books is her long life goal.

She has read a massive amount of books in her former life and has a good memory of the content that especially interested her.

While originally her motivation was only books and she didn't care about anything else, she becomes more and more involved in many other things, as she start to care and love more and more her new family and many other peoples she encounters.

Her body is so frail that she easily get tired after walking for a bit, and whenever she forces herself too much she gets strong fevers that can last for days.

She has a strong talent to teach others and motivate them in their studies.

She is usually very level headed but will go berserk whenever books get involved. The peoples around her know that tendency and will try to reason her whenever she becomes too reckless. As time passes, she became more receptive to those words, especially when they come from Ferdinand and Lutz.

She suffers from an illness knows as the "Devouring" which affects commoners born with mana, the more mana the worse the illness is. According to Ferdinand, Myne should not be living with the amount of mana she possesses but says it can be attributed to her strong will. Her frequent fevers can also be attributed to this illness.

At the end of Part 2, she gets adopted by Karstedt and her name gets changed to "Rozemyne."