Reiko Kirishima

Reiko Kirishima attends Reinan’s Senjukuha Program

Appearance
A rather plain girl of average height with fair skin, considered cute without being eye-catching. Only notable feature being her hair; dyed a shade of purple so deep it was almost black. She normally wears a white t-shirt, tight black pants with a buckle belt, and black rubber boots. She is also well endowed, and the shirts she wears give detail of her breast size.

Background
Reiko, before attending Reinan, founded the all-girl biker gang Dorami where Saki acted as her squad leader. Sometime during high school, she resigned from her position as leader and passed on the title. During this time she also met, and started an intimate relationship, with Sendayuu before eventually settling down into a steady friendship before going to Reinan. Reiko maintains this relationship throughout the rest of the book.

Personality
While more even-tempered than Saki, Reiko is still rather fearsome when angry. In the early years as a student she was violent and aggressive, willing to use force, usually excessively, to get her way. And, while not quite the same level of overconfidence that Kiichi often displayed, it did allow Hijiri to quickly take her out of the last Year 2 fight by surprise.

She took the roll as seeming imperious and intimidating to the younger students very seriously in Year 4 compared to the rest of her class. Even putting on a bit of an exaggerated crudeness when talking to Mitsuki, a first year she ended up pointing towards Ryuuji for training.

Despite her aggressive personality, she is still very caring.

Ability
Reiko fighting style revolves around a technique called Zoukai (Elephant Cloth) allowing her to manipulate her center of gravity and increase her perceived weight to the point you could compare it to an elephant. This a very dangerous and powerful fighting style referred to as Henkou Ken (変更拳, Shifting Fist) focuses on trying to find key moments to shift in order to always have the element of surprise on her side, allowing her to have the upper hand.

This fighting style focuses on fluid movements and a strong stance. These fluid movements allow Reiko to easily maneuver herself around the opponent as well as allow her to make better use of her environment. When it comes to attacking, this style favors fast and explosive attacks and grabs in order to make better use Zoukai. Reiko seems to use Zoukai sparingly in order to prevent from becoming predictable as well as keep her opponent worried and on their toes.

Like many of her fellow peers, she managed to find many applications from what started out as a simple technique:

Initially she would only increase the density of herself; either giving her a substantial boost in durability and strength or increasing her weight to crush the opponent.

Using a variation of Zoukai she is able to achieve flight by decreasing her perceived weight until she can ride air currents, then rapidly changing direction or speed by increasing a small part of her body's density and casting it in the direction she wanted to travel.

She eventually learned to project this ability allowing her to alter the mass of inorganic objects at will. She mainly uses it to manipulate the density of a spiked chain to swing it with incredible speed while it's light, then deliver devastating blows by suddenly increasing it's density. Or wrapping it around people, then using it's weight to trap them.

Finally she learned how to alter the mass of organic objects allowing her to manipulate the density of other people to make them more fragile and easier to destroy.(This is implied to be a killing technique, though.)

Trivia
She is an expy of Violet Sullivan using elements of Reiko Amabuki and Misaki Oga