Tell me: Where am I?

The little girl ran to the house on the hill one evening. She did not know how her adventure began as she looked at a beautiful, colorful painting. One day, a man appeared on the painting canvas in front of him. He told him her story. Girl, For years she had lived in a mind as an important part of a sad and joyful life. The man hiding among his colors on the canvas was none other than Miyazaki. This story was actually his story.