World x Unknown

Part 1.Underneath a tall mountain surrounded by fields of hay at approximately midnight, a particularly loud sound of two metal objects clashing at each other could be heard as the winds blew ever so roughly. Two people moved with speed so fast that the naked eye couldn't catch a single glimpse of them. They moved across the fields, fiercely clashing with each other while one of the men released such intense pressure and killing intent that it was almost impossible for the other person to even breathe. Under the thick cover of the night, their battle lasted for half an hour already and neither one of them had dealt any kind of significant damage to each other. The person constantly on the attack was an old man whose body was built like that of a tank due to the countless battles he has been in. His upper body was completely naked and revealed the massive amount of scars he had, while his long gray hair was tied in a