Dream Window

"A dream, a dream so real, so full of life." [Yes, only illusory dreams can transcend the obstacles of reality and build bridges connecting each other in infinite space. An accident brought the protagonist to a magical city beyond imagination in his soul state, where he came into contact with an ancient book. As a result, he obtained an overly intelligent magical system and traveled to a country of swords and "magic". In this mysterious world where changes occur due to the existence of magic, the only thing he can rely on is his own unique magic! [I don't think it's "only". ]