Reasons Not to Enter a Haunted house is a Manga/Manhwa/Manhua in english language, Manhwa 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

What does a bright world look like? Lee Hyun's world is filled with dark lumps left behind by grotesque ghosts and souls. As Hyun struggles to ignore these horrors in an attempt to live an ordinary life, a strange guy who seeks out haunted houses suddenly appears before him. In such perilous places, can they make it out unscathed?