Read manga: Rurigaki Yoruko No Yuigon

manga
Genres: Mystery ; Shounen
Artists: MIYASHITA Miki
Status: ongoing
Latest chapter: Chapter 9
Updated at: Aug 25, 2019
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.