Konjiki No Moji Tsukai - Yuusha Yonin Ni Makikomareta Unique Cheat is a Manga/Manhwa/Manhua in (English/Raw) language, Action 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

Five people summoned to another world to battle the demon lord who threatens that world. However, there were only four heroes that were summoned, and the other an innocent bystander. What will the innocent bystander do next?