The Night Beyond the Tricornered Window, Vol. 6 (Yaoi Manga)

Detective Hanzawa definitely doesn’t believe in supernatural phenomena, but after he finds Erika Hiura at the site of a crime scene, the connection is too clear for even him to deny. And Erika, after years of cursing people with no regard for her actions, feels the terror of being confronted about her crimes in the real world for the first time. Convinced she’s been sold out, she decides the person who betrayed her must be…Kosuke Mikado.