Soldiers have been lured away by a beautiful woman who transforms into a spider and kills them, earning her the nickname the Black Widow. Hanadate requests that representatives attend that night's military gala and pinpoint the killer. At the gala, the representatives pair off and split up. Hanadate immediately asks Zakuro to dance with him, telling her that it will be easier to watch the women while dancing. In the balcony, Agemaki tries to hide his jealousy while the twins attach magical petals on the women. They explain that they can sense the presence of anyone a petal is attached to when a twin is singing. When the dance is over, Zakuro is left by herself. She is approached by two soldiers who wish to touch her ears. Although she protests, they tell her that causing a scene will hurt the reputation of the Ministry of Spirit Affairs. Before the soldiers can touch her ears, Agemaki intervenes. As Zakuro cries, Agemaki tries to comfort her. The twins notice that Hanadate is leaving the ballroom with a mysterious woman. Shortly after, a petal has been destroyed. Hanakiri and the twins track the destroyed petal and discover Hanadate is trapped in a giant web. The other representatives are confronted by a pair of cloaked figures, but the figures are quickly overpowered. The Black Widow attacks Hanakiri and the twins with her spider form. Hozuki protects Hanakiri while Bonbori fights. However, the twins are only at half of their power when separated, and Bonbori is easily defeated. Before the Black Widow kills her, Zakuro arrives and stabs the Black Widow, who reverts to her human form. The Black Widow tells Zakuro that everything will be explained soon and reveals that she knows Zakuro's mother. Before Zakuro can question her, the Black Widow disappears.
政府の人間が集まる夜会や舞踏会で、妖人の仕業と思われる軍人を狙った事件が頻発していた。女の誘いに乗ってついていくと人食い蜘蛛に変身して人を襲うというのだ。陸軍上層部の夜会を警備をすることになった妖人省の面々。西王母桃たちも一般の招待客に紛れ込んで警備をするために西洋流の正装で出かけることに…。
Soldaten wurden von einer schönen Frau weggelockt, die sich in eine Spinne verwandelt und sie tötet, wodurch sie den Spitznamen Black Widow erhält. Hanadate bittet Vertreter, an der Militärgala dieser Nacht teilzunehmen und den Mörder zu lokalisieren.
Los soldados fueron atraídos por una hermosa mujer que se convierte en araña y la mata, lo que le valió el apodo de Black Widow. Hanadate pide a los representantes que asistan a la gala militar de esa noche y localicen al asesino.
