Buso Renkin, Volume 9 — Nobuhiro Watsuki

While investigating the mystery of the black kakugane, Kazuki, Tokiko and Gouta and unexpectedly meet up with Alexandria and Victoria, the wife and daughter of the traitorous Victor. Alexandria and Victoria explain that a cure for the effects of the black kakugane exists, but it comes with a steep price. Now Kazuki faces a grave choice: Can he afford to pay...or will he find that he can't afford not to?