This trope was discovered by Joseph Campbell, who studied many of the stories that have been passed down through the centuries telling of a hero who fights a villain and defeats him by going through moments difficult to finally defeat the villain and return to a normal life, but becoming a stronger person at the end of the journey. In the series the person who guides Sailor Moon and the sailor scouts to become stronger and encourages them is Luna and Artimes. The popular magical item in the series' Hero's Journey are the pins received by each of the sailor explorers that grant them power. Some of the tough times that sailor scouts tend to experience are in struggling or struggling with personal problems that they face, but they overcome those problems and grow