Traveling to 13th Century

Tania is a girl student in senior high school. She wants to have a boyfriend who handsomes and strong like a king. She prays at one night but she didn't know what happened the next. Tania woke up in the morning, she heard a voice that called her "queen", then she realized that she has traveled to the 13th Century by her prayer. Now She is trapped in the Singhasari Kingdom as a queen. The Singhasari Kingdom is one of the big Kingdoms on Java Island at that time. And now the reigning king is King Anusapati. The 2nd King of Singhasari Kingdom. Tania learned the history of the Singhasari Kingdom in her school. She knows about the curse of Mpu Gandring where a Kris that was made by him will Kill the current King which is King Anusapati. Then she plans to save the king with her knowledge. What happened to the next? Let's check and read the story :)