[Machine Translation] In a Norwegian countryside town bustling with spring festivities, the roar of a beast is heard, and suddenly the full moon is engulfed in red and a roar echoes through the darkened square. While people whisper the word "Ragnarok," a body is found frozen to death in a nearby mansion. Despite the warm temperature outside, the study was frozen in just a few dozen minutes. Hiraga and Roberto proceed with their investigation, but is that man behind the incident? This is the 8th volume of the casebook of the genius priest duo.