On a rainy day, Ango Sakaguchi, a composed and analytical 25-year-old Japanese man, is engrossed in his study of antiques. His tall, slender frame is cloaked in a pale brown double-breasted coat, and his green eyes peer through circular-framed glasses. Despite his calm exterior, Ango wrestles with the mental strain of his unique power, Discourse on Decadence, which extracts memories from objects and people.