Soutetsu Asou shares a dormitory with Michiru Kita. He proudly declares himself an "adventurous epicurean," roaming the globe and only returning when his undead status within the Zombie-Loan system forces him back to meet loan obligations. Asou operates out of the Z-Loan office alongside colleagues Chika Akatsuki and Shito Tachibana. Known among peers as the legendary "Dub King," he wields a European-style axe that manifests directly from his right hand. His duties later evolve to include serving as Bekko's bodyguard, marking a significant shift in his role within the Z-Loan structure.