Kate is a detective who investigates monsters. He lives in a weird city - A robot's smile creeping in the darkness of a laboratory , a mysterious shadow appearing on the balcony, a blackhole that tears open the space around the corner of a street... Seeing more and more these weird phenomenons appearing, people were on the verge of madness, yet only detective Kate is enjoying the adventure. As he approaches the dark, the monster that lays within is creeping towards him... (Source: MangaDex)