Ruby Sangū

Ruby Sangū (三宮ルビ Sangū Kougyoku) is the twin sister of Aoi Sangū and the older sister of Mitsuba Sangū, as well as the General of the Vampire Slayers. She is also part of the Sangū family, one of the three prodigious families serving the Hīragi Family. For a unknown reason, she was tossed away by her family becoming part of the Vampire Slayers`s elite unit known as "Destruction" and eventually after many years climbed her way to the top of the pedigree becoming the General of the Slayers at age 15, a feat that Edward also accomplished.

Appearance
Being the twin sister of Aoi, she appears the same as her; being taller than her younger sister Mitsuba and much more buxom like her twin sister as noted by many members of the Japanese Imperial Demon Army when they first encountered. However, Ruby wears a constant scowl on her face never deviating from that expression and even her former teammates remark as such. Due to her constant scowl, her demon Aoi-no-Zanpo has deemed her a "party-pooper" much to her great displeasure. She had straight shoulder length blonde hair (which is lighter than Mitsuba's) pulled into pigtails, which were on the back of her hair than to the sides, unlike Mitsuba; her bangs are parted on the right, which were held them in place with two hair clips. She has purple eyes as well, which are usually narrowed in suspicion whenever she meets new people. She wore the First Shibuya High school uniform, a sailor fuku which consists of a blouse with red trim around the collar with a grayish blue sailor-style collar which also has red trim and a similarly colored skirt with a belt. The red uniform ribbon which is thinner than normal sailor fuku, is attached to the bottom right end of the collar. The school's emblem is located on the right breast. She wears thigh length grayish blue stockings and dark blue dress shoes along with it.
 * Anime: In the anime, she has green eyes.
 * LN manga: In the Catastrophe manga, she has blue eyes.

Vampire Reign
In the manga, she wears her hair in a side ponytail with a blue ribbon around it. Her bangs aren't parted. She wears the standard VS uniform which consists of a long-sleeved blue and black military jacket with red details including the shoulder epaulettes, which has a fourragère around her right side connecting to the lapel of the coat, and two rows of gold buttons on the front. Along with that, she wears a pair of white gloves, an armband on her left arm, and a white web belt buckled with a gold waist-plate. She also wears blue and black military pants to come with that, and black boots.

Personality
Being the leader of the Vampire Slayers, Ruby has a jaded view of Humanity in general, yet still continues to fight for them for a reason known only to her. Possessing a stoic nature, with a good head on her shoulders Ruby is a powerful and callous warrior who wages war against the Vampires because she must impose "justice". She is constanally displeased when she is in the presence of her fellow family members and even comments as such openly in front of them rebuking Edward when he dares to speak out against her claims of how her family is nothing but a family filled with "dogs of the military" as she eloquently put it. Aoi stated that Ruby is a powerful warrior who has no "heart" to speak of, merely fighting for freedom against the Vampires because that is what her soldiers believe in. A composed warrior, she almost loses her cool and is always portrayed as a calm and confident warrior in the presence of her troops. Despite her twin sister`s claim, Ruby does indeed care for the Vampire Slayers but does not often show her true emotions making her come off as cruel, unmerciful and even callous to people. Gentle-hearted in the presence of her closest partners and former teammates, she is soft and compassionate even smiling in their presence causing the majority of them to fawn over them.

History
The Sangū family were one of the branch families serving the Hīragi family. For some reason, she was tossed away by her family and became part of their elite unit, the Vampire Slayers and infiltrated Shibuya High School for her mission to prove herself. At some point of her life, she enrolled in Shibuya High School, and her appearance in the light novel is limited. Much like her role in the manga, she is shown as the General of the Vampire Slayers. She is in the same class of Guren, Shinya, Mito and Norito (the genius class); being the class president and a member of the Student Council. When Ruby was fifteen years old, the apocalypse virus, was released on Christmas Day 2012, killing her parents, and Aoi Ruby`s twin sister began to take care of her little sister.

Events of 2012
On the first day of school, Guren notes that there is a girl from the Jūjo clan, a boy from the Goshi clan, and even two girls from the Sangū clan in his homeroom class. Alongside her twin sister Aoi, Ruby is noted by one of the top students in Guren`s class along with Shinya Hīragi, Mito Jūjo, and Norito Goshi.