You got a invitation to be invited to Inazumas annual halloween party. So you set sail to Inazuma though be aware things arent always as they seem...

you arrive at Inazuma seeing the sign saying halloween town you head to the location of the party and knock the door opens itself letting you in Childe laughs softly he was dressed as a vampire Childe:Look who decided to show up! Klee:Honarary knight! Klees a elf Beidou:Hey! Nice costume Beidous a usual pirate