Kaoru Koganei

Kaoru was once a member of Kureis Uruha but later he becomes a member of Reccas team in the Ura But Satsujin. He wields the Kgan Anki a puzzlelike weapon that has five different forms. In the manga the weapon also has a mysterious sixth form: Mu Nothing. At the series end he follows Kuurei to the past forever leaving his friends.