A phantom thief queen—whose age and gender are unknown—flies around the world on an airship in search of treasure. A gemstone the queen had their sights on is stolen from them by a mysterious circus troupe, and a game soon unfolds between the queen and the troupe's magicians, hypnotists, and other members wielding special abilities.
Tanjiro Kamado, joined with Inosuke Hashibira, a boy raised by boars who wears a boar's head, and Zenitsu Agatsuma, a scared boy who reveals his true power when he sleeps, boards the Infinity Train on a new mission with the Fire Hashira, Kyojuro Rengoku, to defeat a demon who has been tormenting the people and killing the demon slayers who oppose it!
Hinako is a surf-loving college student who has just moved to a small seaside town. When a sudden fire breaks out at her apartment building, she is rescued by Minato, a handsome firefighter, and the two soon fall in love. Just as they become inseparable, Minato loses his life in an accident at sea. Hinako is so distraught that she can no longer even look at the ocean, but one day she sings a song that reminds her of their time together, and Minato appears in the water. From then on, she can summon him in any watery surface as soon as she sings their song, but can the two really remain together forever? And what is the real reason for Minato's sudden reappearance?
