Kun Osaki is a minor villain in Corpse Princess.
Kun was once a J-Pop star who died of a heart disease before she could make it big. She was revived as a Shikabane because she wanted to keep singing. When she was revived she could use her voice as a weapon. She ended up killing people like Osaki and others all because they weren't listening to her singing. She used her manager's mob connections to keep Osaki's death quiet, as well as any deaths that occur around her.
She always gets enraged when her song is interrupted or when someone does not listen to it. Her response to this is usually to kill the person who caused it. She was eventually killed off by Makina and Keisei.