Hwang Hyunjin was in the dark valley inside his moving castle, he was in his room with the potions book open in front of him with all the ingredients to make a potion at the request of one of his clients, he was putting the last ingredients when a downstairs he hears the sound of the door opening at first I think it was one of his friends who came to visit him but hearing the silence he got up to go and check finding a girl who was... cleaning?