Ryofu's best friend since childhood and also her lesbian lover. She was a C-rank with great potential. While Ryofu was battling Toutaku, Chinkyuu knocked out Kaku to prevent her from interfering. Kaku got her revenge when she caught Chinkyuu stealing the Gyokuji and got Rikaku to rape her. When Chinkyuu recovered from her injuries, she saves Ryofu from being killed by Myosai. However, she realises that Ryofu is moments away from dying due to her illness. Since she was loyal and in love with Ryofu, Chinkyuu decides to stay by her friend's side and commits suicide with her instead of surrendering to Sousou.