$uicide Line is a Manga/Manhwa/Manhua in english language, Josei series, english chapters have been translated and you can read them here. You are reading chapters on www.mgeko.cc fastest updating comic site. The Summary is

Kuroda is a police investigator with a special talent for sniffing out corpses -- literally -- due to a traumatic event in his childhood where he was trapped in a room with his deceased family members for several days. After being assigned to the Missing Persons Division where they hope to make the best use of his ability, he meets a genius detective with an unbelievably high case closure rate.