Read it official: VIZ or MANGA Plus. Volume 3 ends on a civilian name. Yuu Inazuma, who calls himself Mr. Inazuma, is trying to break into the 208th Rakuzaichi because his sister is inside it. The auction warehouses people. That is not a metaphor the later chapters invent. It is this issue’s job.
What the title refuses
The long book could have closed Volume 3 on Hiyuki or Kyora. It closes on a child with a fake adult name. Chihiro gets the sister and the other hostages out when the Storehouse comes apart. The reunion is the argument against treating the Rakuzaichi as a heist.
File: Yuu Inazuma. The auction: Rakuzaichi. The civilian door: civilian sorcerers.