Although her current name is "Akai Ran" her real name is not that one. She was called "Bellisse D'Aureus" and she belonged to a noble family, one of the families that most influenced the kingdom.
Her sisters used to call her "bell" because she had a necklace with a small rattle.
When confronted with a forced marriage with a member of another noble family she decided to run away from home and do the thing she wanted most, to explore the world.
Countless times the family tried to contact her but without success because she had already changed her name.
She is introverted and prefers to travel alone, she feels lonely several times but always carries a picture of her sisters to feel better.
She loves to read, draw, and exercise, many said she was "tomboy" but she did not care.
Akai has a friendly rivalry with "Yukitora Blanc", ironically Blanc is the family she was supposed to mary into..
She is a member of a noble family like Akai, the difference is that Yuki likes to show it and she is proud of it. Her rivalry with Akai began when she discovered that she ran away of her responsibilities.
She wants to teach Akai a lesson that life does not always go the way we want.
Yuki has always known that Akai Ran is actually Bellisse but never told her directly, despite leaving some clues.
Before leaving home in search of Akai she was the one who organized the sales and exchanges of the Blanc family.
Being excellent at everything she does, she has the luxury of choosing what she does, so she did not blink when she had to leave her place in the family business.
Her personality is strong, cold and very proud, she likes to provoke people, is sadistic and does not hide it.