Ichinose Rei, a prodigy boy and son of the owner of Ichinose Group, a powerful group that comprise of nearly half of the corporate town, Segawa. But in his childhood he suffers a terrible accident and consequently his gender was switched to a girl. Rei studied overseas until she became a teenager, she entered college very young and holds a doctoral degree, all for the sake of her clan, she expected to be their heir until her father banished her, discarding her due her gender, not allowing her to becoming the heir, but nominating her hateful childhood rival instead. She is given a new identity, Midou Maria, some money and expelled from the mansion. At first Maria thinks in committing suicide, but later she decides to join a young group who plots against Ichinose Clan, where she will do anything to obtain her goal: revenge.
An antisocial beauty with a resolute personality. She transfers into Kazuki's class on March 2nd—right before the end of the school year. Immediately upon her arrival, she announces her intent to "break" Kazuki. Maria is the main female heroine of the Hakomari series. Maria is a box herself. She once met "O" who offered her a box. Her wish was to become a box herself so that she could grant the wishes of other people. Of course her wish could not come free of charge, so every time she uses her box she loses her memories. Her box is able to give people a place where they can be happy, however she knows that this place is only fake, and the happiness is only fake. Her life first intertwines with Kazuki when she sneaks into Mogi's box that created the recurring classroom. Being a box herself, she is able to keep her memories each recurrence. She spends years searching for the one who has the box and created the recurring classroom. During this time she also spent lots of time obtaining new skills, such as martial arts and how to ride a motorcycle. Eventually, have Kazuki uses the name "Maria," a name she only used in a previous classroom, she determines that Kazuki must own the box because he could remember things. Kazuki however is unsure of whether he owns it himself, and doesn't know how to give the box up even if he wanted to. Maria expresses her intent to break him, and declares war on him. Maria eventually realizes that Kazuki doesn't have the box after Kazuki himself gets run over by the truck and the box doesn't end. She then decides to team up with Kazuki in order to find the real culprit of the box. After Kazuki "kills" Iroha Shindou to save Maria who was supposedly kidnapped on Oomine's orders, she feels he betrayed her and decides to live not as Maria Otanashi, but as the box Aya Otanashi. She saves Daiya Omine after he gets stabbed by a former follower after he lost his box to Kazuki, but in turn forgets about him and everyone he knows, including Kazuki. After she she watches Kazuki gradually losing his sanity being inside her box, she accepts the death of her sister, Aya Otanashi, and merges with the original zeroth Maria. She takes care of Kazuki after he loses his sanity, until he gradually recovers his mind. They marry each other in the end. (Source: Baka-Tsuki)
Maria is the daughter of a viscount, but she doesn't give off that feeling as she often acts as an 'outrageous tomboy' which is stated by her childhood friend, Lyle Waldstein - who she has an unrequited love for - only ever playing the part of a 'high class lady' when the time calls for it. The moment Lunaria is rescued and taken in by Lyle, Maria instantly treats her as a rival in love.
Marta tends to think along right-and-wrong lines. A bit of a tomboy, Marta is passionate about getting her way. On the left side of her forehead lies Ratatosk's core, imprisoned in a dormant state. Emil Castagnier became her guardian knight, a Knight of Ratatosk, in order to protect her and Ratatosk's core. She views him as effeminate, but believes he possesses a hidden strength which is why she reminds him by saying "Come on. You're a man! Speak up!" Marta falls in love with both Emil and Ratatosk Mode Emil. As the game progresses, she begins to love Emil for who he actually is, instead of the fantasy she created in his image. Marta also gets very jealous when Emil tries to get along with other girls, mainly Colette, Sheena and Raine, stating that she shall not give up on getting Emil's heart. Being the romantic that she is, Marta will fully support anyone's attempts at a relationship as long as its not directed towards her or Emil. Marta's family is not revealed until a little later in the game, when the trio meets Colette Brunel, the last Chosen of Regeneration and the main heroine from the original game, Tales of Symphonia. Apparently, Marta's mother was killed during the Giant Kharlan Tree's rampage in the original game. Marta blames Colette, because she thinks that Colette ran away from her duty. Marta states that if Colette had not been such a coward, her mother would still be alive. Their relationship gets better when Marta discovers the truth about Colette and the rampage of the Giant Kharlan Tree. Later on in the story, Marta's father is revealed to be Brute, the leader of the Vanguard. Other than that, Marta is an only child. (Source: Wikipedia)
Kumokawa Maria is a character introduced in Shinyaku Toaru Majutsu no Index, as Kumokawa Seria's younger sister. Seemingly a background character as a maid-in-training of Ryouran Maid School and friend and classmate of Tsuchimikado Maika in her first introduction. She is reintronduced as a during the Natural Selector tournament, where she receives reports that Kihara Kagun, her beloved missing teacher would be there. She later gets caught up in the experiment of Othinus in Baggage City, and the bloodbath that ensues in the battle between the Kiharas and Academy City forces and GREMLIN and the Baggage City forces, and tries to survive. She is arguably the main heroine of the 4th Shinyaku Toaru Majutsu no Index Light Novel Volume. She is cheerful, confident and prideful due to her abilities and talent as a maid are superior. Her goal is to find and service an incompetent and stupid master; to do this she works her pride to be damaged to a level where it will not break. She also has a strong sense of justice, helping people who are a threat to her life, not allowing Shuri to kill people, and even merely subdued Kihara Enshuu even after all she had done to her. She is referenced as someone similar to her sister, as someone who could not do not do anything to prevent terrible things from happening despite knowing about it. Furthermore, she is greatly acquainted with scientific principles, analytic, and is pragmatic, allowing her to solve situations without needing any special powers or assistance. For example: using her maid outfit to cause a dust explosion, as well as using a blowdryer to destroy "bugs". She is also determined, going all the way from Academy City to Baggage City just to find a single person. Moreover, she has one of the best grades in her school, and the narrative states her as a transcendent genius.
She is Utako's best friend and call her by the nickname "Utamaru."
Age: 16 Sentence: Indefinite An ordinary boy who wouldn't look out of place anywhere, he was imprisoned on false charges. Although cowardly, with no stomach for fighting, he appears to have a sense of justice.