Library of Ruina/스토리/하나 Library of Ruina/스토리/잔향악단 2차전 Library of Ruina/스토리/머리 Library of Ruina/스토리/총류의 층 Library of Ruina/스토리 Library of Ruina/스토리/검은침묵 Library of Ruina/스토리/잔향악단