Mantradeva 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 Mantradeva chapters on www.mcreader.net, fastest updating comic site. The Summary is
When the prophecy was violated, the devas once again descended their power unto the world in the form of the nine Navadevata heirlooms. Now, a new legend is being carved.