Jewelpet Happiness Episode 15 English Subbed Episode Title:Delivering Letters!.Episode Description:As she decides deliver her invitation letters to the post office, Ruby tells Chiari and the others about Luna along the way. After all the confusion, Luna formally introduces herself to the girls and Sapphie mentions she manages the post office by herself and delivers the letters. Despite how well the two treat her, Luna still thinks she has never achieved her own happiness.