Aya Natsume - the fantastic killer

Aya is the younger sister of Shin Natsume, and Maya Natsume. She is a freshman at Toudou Academy. She has brown hair (auburn in the anime). She is instantly infatuated with Souichiro Nagi when he crashes into the shower room, insisting that he marry her, as it is a tradition of the Natsume women that the first man to see her unclothed must become her husband. She pursues him relentlessly throughout the series despite his vehement protests. This attraction to Souichiro also leads to a rift between her and her sister, as Souichiro is in love with Maya.

Masataka Takayanagi is also in love with Aya, but she has shown no interest in him. However, she does respect him for his strength, skill, dedication, and typically calm nature. She eventually entrusts him to guard the computer chip that F is after.

Throughout the Manga, it is shown that Souichiro and Aya have some sort of mental connection between them that calls to the other when they are in trouble. ^[1][2][3][4] This could be due to their powers complimenting each other, since Nagi’s dragon’s fist can collect and supply huge amounts of ki and Aya’s dragon’s eye can consume an unlimited supply of ki.

[edit] Techniques & Abilities

Aya fights with the Natsume family style just like her sister.^[5] It is called Natsume Goushin Ryuu.

Techniques

Returning the Scabard^[5]

A staff technique of the Natsume family, used to throw an opponent holding a staff to the ground and steal their staff.

Natsume Goshin Ryu Secret Technique; Bamboo Grass Summer Rain^[6]

A sword technique that transmits attacks through the wind.

Aya’s activated Dragon’s Eyes

Dragon’s Eye

Aya has the power of the Dragon’s Eye (龍眼, ryuu me or ryuugan^?), which synchronizes with the spirits of all things^[7], thus it gives Aya a type of prescience that allowed her to see anywhere past, present, possible futures; as well as seeing and hearing the dead. Aya can also use her Dragon’s Eye to astral project and to use psychometry with Shin’s motocycle. The Dragon’s Eye is known for its capacity to consume ki indefinitely, so sustaining it too long can cause the user to lose consciousness. Her powers fully awakened around the time she entered high school, unlike her brother who awakened his power when he was still a boy. Although when younger she showed signs of her ability, since she was able to hear her dead parents voices when they were speaking to Shin.

Swordsmanship

Aya has an affinity for katanas, and is fairly skilled with them. She isn’t as skilled as someone like Madoka Mawari, nor does she seem as good as her sister. Aya’s first katana was shattered by Ryuzaki, and after a brief time in possession of Reiki, she borrows other swords.

Reiki

Aya has developed a relationship with Reiki, a ceremonial Nodachi, that is her family’s heir loom. Her sister is the current guardian of the blade, but as Reiki has its’ own spirit, Aya’s Dragon Eyes have enabled her to speak to it. Reiki seems to indicate the two will eventually become one, so Aya may indeed gain possession of the Reiki eventually. This is also supported by Ms. Hotaru who calls Aya the blade’s “true master”^[8].Unlike Maya, Aya actually has a special power and thus can activate Reiki’s power even though her sister can not.

Aya actually indicates Reiki is a part of her body, furthering the connection between the two. She has even recently managed to turn her hair into the Reiki, the method however is unclear.