Steam Bow

The Steam Bow looks a composite bow with brass "belly" piece where the the arrows are placed. When drawn back the "core belly" lets out a puff of steam and the arrows is let loose at a very high speed that is able to pierce the Kabane heart.

The arrows used seem to have explosive tips and are not made out of wood in order to compensate for the pressure and tension of the bow. 蒸氣弓