In the 15 second clip, Rufus (CV: Hikaru Midorikawa) and his partner Gagumber (CV: Hiroki Touchi) prepare to embark on a treasure-hunting expedition to Crystal Palance.
A young girl, Memempu, who wants to be a Marker one day, and a man, Gagumber, who used to be one.
Those who risk their lives to develop “the Labyrinth”, who mark out the undeveloped areas, are known as “Markers”.