Guys you are my last hope. Some time ago i was reading a manga but i don't remember its name. It had a main character that at a certain point go traveling with some companions he met along the way and one of the firsts steps were to go meeting a certain witch residing in a tower. So basically in this manga in ancient times there where a big battle won by 3 men a sage(mage) a king and an hero if I remember correctly and basically that witch its the sage's disciple. At a certain point the reach this tower and they are asked to do some trials and in one of this trials they have to fight the hero's spirit. I asked on dozen of sites but none could help me. I have big hopes for you