The Demon Sword Generalissimo Starting from Impel Down City

Starting from Impel City, the Demon Sword Grand Marshal "Blood Demon" automatically kills people and absorbs 100% of the power of the killed person, including the power of the Devil Fruit, into demonic power, and feeds 50% back to the master for perfect absorption. Coming to the world of pirates, I chose to become a small soldier in Impel Down City. As the sole owner of the demon sword "Blood Demon", an evil man named "Demon Flute Song" had one year left before Luffy, Blackbeard and others invaded Impel Down City. The ultimate goal: Climb to the position of Navy Grand Admiral, powerfully control all naval forces, depose the world government, and become the true ruler behind the scenes of the world. Ghost Flute Song: "My sword... Is already thirsty!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.