Youkai Gurentai

one day, at the base of mt. fuji, appeared a “castle” pouring out youkai. to curb the labour shortage caused by a declining population, the government decided to integrate the youkai into society; however, this led to rising conflicts between humans and youkai. in response, the jsdf, with aims to expand their influence in public security, secretly forms a youkai penal tactical response force, “tachikawa task force”, to execute “tactical solutions” for the various issues born from this new society.