|Bust||80 (B) (Original)|
91 (G) (2nd season)
|Maria||Maria to Sasha|
|Element||Sword of Maria, half of Sword of Maria (manga)|
|Voiced by||Ayumi Fujimura|
|First Appearance||Episode 1 (Anime)|
Chapter 1 (Manga)
Mafuyu has medium length red hair and purple eyes. She is of average height. She has been also made fun of by Sasha for having small breasts, one of the smallest in the anime with Hana Katsuragi, Ekaterina Kurae, and Fumika Mitarai being the only ones smaller than her before her increases. In the manga, her breasts continue to grow throughout the story. In the second season, after training with Katja, Mafuyu eventually grows into a G-cup. Mafuyu is always seen wearing her school uniform and holding her kendo sword. She changes outfits naturally.
Mafuyu is a very strong willed girl. She likes to be independent, and won't hesitate to help others. She gets embarrassed easily, but can be surprisingly kinky, especially when it comes to Sasha.
Mafuyu Oribe is first seen, along with Tomo Yamanobe, praying at their local church. Mafuyu realizes that they are running short on time, and needed to hurry to their school, where Tomo accidentally falls, finding Teresa, who works part time at the church. Teresa tells Mafuyu and Tomo that she will be late, do to her work.
Mafuyu and Tomo are barely able to make it to class on time, where Tomo is met with a water, which Mafuyu on to Hana Katsuragi, but she denied it, and stated that she thought that Tomo was dead, since someone was going around killing girls. This angered Mafuyu, who was about to hit her with her kendo stick, but is stopped by Miyuri Tsujidô, who mocks both Mafuyu and Tomo, revealing that Mafuyu is an adopted child, as well as Tomo's father being missing, and telling Mafuyu that if she did not control her temper, her and Tomo, would be kicked out of their "run down shack".
Mafuyu and Tomo are next seen in a locker room where, Mafuyu helps dry off Tomo. Mafuyu angry at the situation believes that she needs to hit the others for the way they treated, but she was ultimately convinced out of it by Tomo, who tells her that God will those who don't have hate. Mafuyu proceeds to hug them, not believing her words as neither her father nor God was protecting, stating that she will protect Tomo no matter what.
Mafuyu and Tomo then get out of school, and while deciding on dinner find a boy out cold, although he does momentarily wake, he is knocked out again by Mafuyu, after he groped Tomo's breasts. Mafuyu and Tomo then bring him to their home, and decide on getting doctor Oikawa to check on this strange boy.
Mafuyu runs the doctors office, but is stopped by searing fire coming from the church. She runs in and tries to save the false painting but is stopped by a masked stranger, who is revealed to have attacked those girls from gathering for the purpose of soma. The stranger then attacks Mafuyu, with chains that she can control at will. She then mocks Mafuyu, and Tomo's relationship, stating that Mafuyu had never really had time to study in school since she was stuck taking care of Tomo. The stranger then ignites the chains, and starts burning the church to the ground, and tries to kill Mafuyu, but is saved by the boy, who she previously saved. The stranger calls the boy Iron, and tries to take advantage of his weakened state, not having replenished his intake of soma, but the boy is saved by Teresa, who bears her breasts out for the boy to suck on, after calling him Alexander. The church explodes, and Teresa explains to Mafuyu that Alexander is a Qwaser, which are people with the ability to control electron motion. Mafuyu then watches as Alexander is able to defeat the masked stranger.