The Strange Atmosphere

When I was four or five years old, I felt a strange atmosphere.I lived in a house that my grandfather had bought since he got marriage. It was a quite large, old and traditional Japanese house. It was two stories, and my bed room was on the second floor. I slept with my parents as I was little. There were four sliding big windows in the bed room, and the lace curtain was hanged in front of them. I remember that I like the sweet lace curtains beside my upright piano. The curtains were swaying in the wind. Even if it was in a hot summer night, the windows were opened a little bit,  and .the curtains swayed. One night, when I woke up at midnight, it was quite light because of the full moon. When I turned my eyes naturally to the light, I saw a face or a character, such as a smiling bear, a princess on the race curtains in front of the windows. I was surprised at first, but every time I blinked, I could see different animals or characters on them. I feel so excited to see them and blinked several times. I woke up rarely at midnight, but I had the experience only a few times in the summer. I haven't told someone that happened since I had the experience. I wonder whether it was the happening in my dream or not when I remember that happened. However, the race curtains with strange atmosphere has a forgettable place in my earliest memories.