(from ebookjapan):

Her dream is to be a shining actress on the Broadway stage. From a young age, Sue grew up watching her mother waiting for her father to pick her up.

With the memory of her kind mother who worked too hard for her daughter and passed away, Sue left for New York by herself.

She dreamed of one day becoming a stage actress on Broadway, which she longed to do, and she began to climb the stairs one step at a time.

Following Broadway Star, Mizuno would then travel to the United States and remain for two years. In this time, she would do one other short serial before returning to Japan to do Fire!.