Saki Nikaido

Nikaido Saki (二階堂 サキ) attended Reinan's Senjukuha program.

Appearance
Saki has long blonde hair with orange and green highlights pulled into a high ponytail. Her bangs are mostly swept to the left with a single orange highlight. Her casual outfit consists of a maroon and white jacket over a white top and a navy blue knee-length skirt. She also wears her shirt with a red tie. To sleep, she wears a long-sleeved, oversized light blue top with orange pants.

Background
Saki was formerly a biker who conquered the entire Kyushu (九州 Kyūshū) with her biker gang Dorami. Reiko Kirishima was the boss while she was titled the Legendary Kamikaze squad leader (伝説の特攻隊長 Densetsu no Tokkō Taichō).

Personality
Saki has a tough and rebellious attitude, outright stating that she has no respect for those who don't have guts. However she does take her time in school very seriously. Saki also occasionally shows a soft side. She loves playing video games.

Ability
Saki is best known for his natural talent in any aspect of combat. Her unrefined fighting style is used to her advantage in confusing her opponents. Fighting solely on instinct, she has no set pattern of attacks, making it almost impossible for opponents to anticipate her attacks. She is an immensely perceptive combatant, able to quickly see through her opponents' attack patterns and battle methods, which allows her to instinctively come up with various new and effective attack methods. However growing up with Reiko has caused her to adopt more formal techniques into her unorthodox fighting style. Saki’s immense potential growth has become far stronger and more refined, due to utilizing the extreme Hojo Undo regime of Uechi-Ryu to become capable of delivering devastating strikes, as well as able to absorb incredible amounts of trauma. She has also studied Koppō (骨法, literally "Bone-Breaking"). This has pushed her well past her previous limits. Staying true to her nature, this was done by improving her physical prowess and battle instincts rather than learning any actual forms or techniques.
 * Iron Spirit: A skill created by Saki. She gathers most if not all of her Ki to strengthen and harden her body with her skin being a notable case that turns it into a blueish-grey color along with transforming her eyes red. This effect is likely due to the heightened circulation of Ki that she uses to activate this technique.