I Was a Bottom-Tier Bureaucrat for 1,500 Years, and the Demon King Made Me a Minister (Light Novel) - Staff

Alt title: Slime Taoshite 300-nen, Shiranai Uchi ni Level Max ni Nattemashita Spinoff: Hira Yakunin Yatte 1500 Nen, Maou no Chikara de Daijin ni Sarechaimashita (Light Novel)

I Was a Bottom-Tier Bureaucrat for 1,500 Years, and the Demon King Made Me a Minister (Light Novel)

Kisetsu MORITA