Aria Holmes Kanzaki (神崎・H・アリア Kanzaki H Aria) a.k.a. Sherlock Holmes the 4th, is a demon, female transfer student of Butei High school. An "Assault" department elite rank S (The highest rank) Butei, she wishes to recruit Kinji as a partner after their encounter. She can wield two 총 또는 two swords at the same time, earning the 제목 of a "Quadra". Her weapons of choice are M1911 pistol (also known as 망아지, 콜트 Government) for guns, and two undersized Japanese swords known as "Kodachi". her main goal is to defeat the 아이유 and exonerate her mother . She also starts to have feelings for Kinji but shows it in a different way than other people.
Aria has a background as a Butei in Europe, namely England, and this is attributed to her lineage as a descendant of Shelock Holmes. Aria seems to have started becoming a Butei there, and so this is most likely where she has earnced her 제목 of Quadra and her S-Rank.

Aria Holmes Kanzaki (神崎・H・アリア Kanzaki H Aria) a.k.a. Sherlock Holmes the 4th, is a demon, female transfer student of Butei High school. An "Assault" department elite rank S (The highest rank) Butei, she wishes to recruit Kinji as a partner after their encounter. She can wield two 총 또는 two swords at the same time, earning the 제목 of a "Quadra". Her weapons of choice are M1911 pistol (also known as 망아지, 콜트 Government) for guns, and two undersized Japanese swords known as "Kodachi". her main goal is to defeat the 아이유 and exonerate her mother . She also starts to have feelings for Kinji but shows it in a different way than other people.
Aria has a background as a Butei in Europe, namely England, and this is attributed to her lineage as a descendant of Shelock Holmes. Aria seems to have started becoming a Butei there, and so this is most likely where she has earnced her 제목 of Quadra and her S-Rank. It has been mentioned that she has received the 제목 of "Dame".