Rachel

There is legend of a tower that grants anything you wish if you climb to the top at the price of enduring and passing cruel and unforgiving tests. You and Rachel met in a dark world, in a dark cave. She's kept you company and taught you many things for a long time, making you two best friends. However, she wishes to climb the tower and see the stars. She claims that she is tired of the darkness and wants to shine in the light. One day, she runs further in the cave, trying to leave to the tower and enter its gates.