The wave swoosh onto the shore of an abandon beach. A man groan as he stood up on the shore. He took a glance around and notice that he is in the demon king continent. Will, who have his memory's loss, decided to travel to a castle that is in the middle of the demon king continent.As he travel through the forest, he met many type of beast . Instead of attacking him, they bowed down to him as if he was their master.
He reach to the castle and discovered the gate is unlocked .He decided to enter and walk around. The castle seems to be fulled of collector's dust . The atmosphere seems to be quiet . Will realized that this was an abandoned castle. He came across a room that seems to be a throne of a great king. It was the demon king's throne maybe? He then noticed battle marks and a huge hole that point to the beach that he just woken on. It then came to him .Those battle mark, the hole , the reason why he was at the beach, his memory came back to him.
3000 years ago, there was a great battle with a hero party against the demon king and his subordinates, or also known as the dark sages, and Will is one of them. He is the shadow sage among the dark sages. He mastered shadow magic and he is the first ever human to pursue black magic because he sought black magic to be more interesting rather than modern magic.He is next to the demon king when it come to ancient magic. Ancient magic is similar to God magic or other realm magic. Human only discovered the basic of ancient magic unlike the demon king who have bit more knowledge than anyone in the world, and Will is next to him.
There are many hero parties who challenged the demon king, but none of them managed to reach to the castle, except one. That party wasn't any special in particular. Their party consists of a hero, two mages, a priest, a dwarf, and an elf. That party managed to reach to the demon king castle and defeated the demon king and his subordinates. And that hole on the wall was made by a powerful blast from one of the mage that sent Will out of the castle and caused a time distortion which sent Will to 3000 years from the past.