The Grand Harem

As or luxurious boy first day of high school, it was all normal. However everything got flipped upside down and changed throw a light. He then finds out that his father was a demon king and know his uncle is. and know the school that he goes to has changed, and the people themselves has changed they have no memory of what the world was like before the light. Do they even know anything about the light or not, but everything is different that all he knows, but while going he also notices that more and more girls are trying to throw themselves at him but why he is just going to have to find out while he is going.

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