Miracle Planet The Crystal Elements Power

She is an ordinary high schooler girl with an ordinary life, her daily activity is something that she always does and repeat everyday that makes she slowly feel bored with her life. She want to find something new in her life and her wish come true when someday she find an unique crystal near the big tree in the middle of creepy empty garden. Her life was completely change when the crystal lead her entering the other world, other planet in the other dimension, but she never knew that she has a big fate when she meets the prince with his knights. She never knew that her ordinary life will completely change from the start she decide to take the crystal. How could an ordinary high schooler play a role as a heroine to save a whole planet??