Arc 19King of Blood
Luther killed Gluttony, built a fleet, and set sail as the King of Blood while the Royal Navy pursued him. After advancing to Sequence 4, he found that Spirit World creatures fled from his summons and called on the Red Light for answers.
- Luther entered the Phantom Tide, found Cecilia's soul safe, and discovered his sea and abilities had grown before Annie told Audrey that MI9 officers were waiting for her.
- MI9 questioned Audrey about the textile mill, while Luther and Anderson reached Toscarter Island and Anderson was attacked by a crowd controlled by Gluttony.
- Luther freed Anderson from Gluttony's control, pursued the demigod through dreams and a strange city, then killed him when he crashed onto Toscarter Island as a dragon.
- Luther recruited Anderson as his first mate and assembled a fleet, choosing Sea Serpent Walter's Doe as his flagship and setting rules against harming civilians.
- The Royal Navy vowed to capture the Blood Bishop as Luther sailed for Oravi Island, revealed his connection to the Fool, and won Anderson's loyalty by showing him the Red Priest formula.
- At the Tarot Club, Luther challenged Cattleya for using her Eyes of Mystery Prying, revealed that he had killed Gluttony, and asked the members to seek demigod-level Beyonder Items.
- Luther and Klein agreed to cooperate on investigating Red-haired Helene, and Luther received Klein's letter linking her bounty to Vice Admiral of Ailment Tracy.
- After advancing to Sequence 4, Luther found that summoned Spirit World creatures fled from him and performed a ritual to summon the Red Light.