RPG Ring Of Demon

Story: Tells the story of four young men who wear rings Satanic user armor complete with power in the world because the devil ring, the rings Satanic users make war everywhere, but they dont kill civilians. However, they were eventually defeated by a legendary magician who could seal the power of the ring when the ring seal successfully then all the armor used by the four lads devastated. 5 years later after the ring seal, and thats when the four rings Satanic it is in use by an evil witch who lives in the black tower, its strength misused so much that it changed the witch humans into monsters...