4. Bölüm: Ranmaru, Şeytanlar Hakkında Adli Tıp Uzmanı Yukino Shiraishi ile Buluşuyor

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Saya gets Ranmaru a date, in the form of forensic expert Yukino Shiraishi, who happens to be Saya's upperclassman in her high school days. During Ranmaru and Yukino's date, Ranmaru discovered that the demons who were responsible for the Machida massacre five years ago and for the death of his police comrades were believed to be of European origin, with Yukino filling Ranmaru in on the background on a Western urban legend that the demons were summoned by alchemists in order to achieve immortality during the Middle Ages in Europe. (Source: Wikipedia)