Rozemyne

Rozemyne (ローゼマイン Roozemain) is the new protagonist of Ascendance of a Bookworm after the unfortunate "death" of Myne at the end of Part 2, the Apprentice Shrine Maiden arc.

History
Rozemyne is the constructed persona devised by Sylvester, Ferdinand, and Karstedt to allow Myne to enter noble life. Sylvester forced her to change her name, secured by a magic contract, and her old identity, Myne, is now considered legally dead.

The false story constructed for Rozemyne is that she was born to Karstedt's late third wife, Rozemary, and had an unusually high amount of mana like her mother Rozemary. In a power struggle between Karstedt's first two wives and his third wife, Rozemary died, and Rozemyne was hidden away and raised inside the Ehrenfest temple for her own protection.

Since nobles don't typically announce their children until their baptism, she was announced to the rest of the nobility and baptized anew in the summer after her story was created. She was then immediately adopted by Sylvester, officially on account of her high mana and great inventions which will bring prosperity to Ehrenfest, making her the daughter of the archduke.

Personality
Rozemyne is very compassionate and shows care and concern towards those around her regardless of their social status. While her inner straightforward personality from her time as Myne hasn't changed in the slightest, she's required to slowly learn how to properly wear the mask of a noble to satisfy the social demands of her various titles and occupations. As a result of this, while Rozemyne has demonstrated herself to be a carefree and kindred spirit at heart, she's also proven to be exceedingly competent when needed and intelligent enough to be capable of quickly learning whatever knowledge her attendants or guardians deem necessary.

Rozemyne has also demonstrated that she prefers to be independent and completely self sufficient, as proven when she decides to hold a concert and charge tickets to acquire necessary funding rather than accept charity donations from the goodwill of her mother's social faction. This is also further proven when she refuses to allow her noble fathers to pay for the expenses that hiring new attendants costs, instead electing to use her own money to cover their expenses. As a result of both her strong sense of self sufficiency and her candid nature of handling any problems that she's faced with, she'll often charge in head-first and attempt to resolve all sorts of different conflicts, minor and major alike, without considering what the consequences of her actions might entail. This type of behavior is completely contradictory to what is expected of her as a noble, and as a result often leads to unpredictable outcomes.

The Saint of Ehrenfest
Rozemyne has been promoted by Sylvester, Ferdinand, and Karstedt as the "Saint of Ehrenfest." This was originally used to promote the idea of why she was adopted by Aub Ehrenfest. It originally began with Rozemyne saving the lives of the unbaptized, starving children in the temple. Rozemyne also improved the orphanage's education and gave work to the orphans. Additionally, Rozemyne has expressed concern about the commoners which is unique for a noble. Her blessings during the trombe mission and her being able to revive the land with her mana are also described as extraordinary.

As part of a standard noble baptism ceremony, it is customary for the priest (in Rozemyne's case the High Priest) to bless the child, and for the child to bless them back. But at Rozemyne's baptism ceremony, Rozemyne, following Ferdinand's instructions on how to act, inadvertently blessed the whole hall, in which around 200 people were watching. Such a thing was unheard of, and thus significantly strengthened her image of being a saint, exactly as Ferdinand had planned.

Rozemyne was also quickly appointed to the position of High Bishop of Ehrenfest (which had been vacated following the prior bishop’s execution), thus further promoting the saint mythos due to the abnormality of such a young person becoming head of the temple.

Attendants
 See Attendants of Rozemyne 

After becoming a noble, Rozemyne continues to employ her existing attendants from her time as an Apprentice Shrine Maiden, as well as her guard Damuel who has served her ever since shortly after the trombe extermination, but also gains additional guards (and later attendants) to her service. This is necessary due to being the Archduke's adopted daughter and High Bishop.

Trivia

 * When creating Myne's new name, Myne suggests "Mynenigou"(Second Myne/Myne No.2), "Aratamyne"(New Myne) and "Akaimyne"(Red Myne). Myne herself thinks those are bad names and she has no naming sense.
 * Rozemyne calls Ferdinand a lolicon because he made her strip for the health check-up.
 * Rozemyne is a portmanteau of her prior name, Myne, and her new persona's late-mother, Rozemary. It was chosen because it is sufficiently distinct from Myne, longer with more intonations like a noble's name, but also gives cover should anyone who has dealt with Myne in the past accidentally refer to her as such, because it can be claimed to be a nickname (or alternately, a cover name used when dealing with commoners).
 * Rozemyne is officially considered one year younger than her actual Myne body. Since nobles don't announce their children until baptism (unlike commoners who do a birth celebration immediately), that was a critical step in sneaking her into noble society. Because Rozemyne/Myne is so small (due to the Devouring, but also due to the hardened mana in her body), they are easily able to simply pretend she is younger than she is. The result of this is that in reality, she is nearly a year older than her new adoptive brother Wilfried, but due to the year adjustment, he is now considered the older brother.
 * Rozemyne's hair and eye colour are often commented on by nobles due to dark blue hair colour being the colour of God of Darkness and her golden eye colour being the colour of the God of Light, which is exactly as described as the goddess of Wisdom, Mestionora, which is the favourite goddess among the gods, who was granted the right to use all of the items representing all of them.
 * Rozemyne beat Ferdinand once in Othello. She took advantage of Ferdinand who played the game for the first time, but soon got beaten and have no chance of winning ever again.
 * She is the 3rd most popular light novel female character from 2020.