Legend of the Unknowns

The story is about a young man, Daesin. It was his first day of school, but he woke up with the same nightmare as ever. He met a demon Tiger as big as an elephant in his dreams and his mother tried to save him from his hands. Still wondering what had happened in that memory and what happened with his mother, he goes to school. What events will happen after this and will he be able to get his memory back. Once in the week an update.