神器娘 (Shinki Musume, Mythic Weapon Girls)
Kagura Tsukune's original personification series, regarded as the masterpiece of this artist. These works started in June 17, 2006, and were summarized into two doujinshi books on 2006 and 2007.
(*1): Akagane no Kagerou, the owner of a Japanese website called 'Gensou no Buki Hakubutsukan (Fantasy Weapons Museum),' pointed out that he can find no authority for the word "Brionac" except some books written by Takerube Nobuaki, a Japanese Game designer. -> http://gensounobuki.fc2web.com/t2/brionac.html
(*2): In this series, Nothung, Balmung and Gram are the mythological sword called 'Three Face' which has three forms.