Smiley is a Manga/Manhwa/Manhua in english language, THRILLER 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

Tomoji Kamome is a freelance writer who lost his beloved daughter in an accident. In despair, his wife leaves him, and he spends his days like a shell of a man. One day, however, a flyer from a strange religious group, the "Heart Laughing Society," changes his fate. It shows the image of his wife, whom he has lost touch with... This is a story of faith and madness. What is the black darkness of the cult that an evil smile invites? A chilling “new religion” suspense begins!