Monster House is a Manga/Manhwa/Manhua in (English/Raw) language, Manhua series, english chapters have been translated and you can read them here. You are reading Monster House chapters on https://mangabtt.com, fastest updating comic site. The Summary is
“As he approaches the dark, the monster that lays within is creeping towards him...” 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 phenomena appearing, people were on the verge of madness, yet only detective Kate is enjoying the adventure.