Kayousei Yumetsukai

At 10 years old, Rinko is the youngest member of the Yume Tsukai. Unlike her sister, Rinko is more active and gung ho and is always ready for action. Smart, yet impatient, she is usually the first to act when it comes to seeking out the nightmares that pop up. She claims to be a Super Elementary School Student.

(Source: Wikipedia)