• Book Name: RURIGAKI YORUKO NO YUIGON Manga
• Alternative(s): 瑠璃垣夜子の遺言
• Genre(s): Mystery Shounen
• Author(s): Miyashita Miki
• Year 2011
• Status: Ongoing Download Manga
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Summary: Yoruko thinks that the murder her brother committed seven years ago is a secret to only between them. But the sudden appearance of the victim's hairpin as a present during Ryuuichirou's birthday party makes Yoruko wonder if somebody else knows about their dark secret.