From hobby to profession: Even as a small child, Amphi dreamed of making a career out of her talent of singing. But after she became a bar singer, her beautiful city of Sana City changed right before her eyes. She didn't want to admit it, but the reality soon hit. Her once thriving city has fallen into misery and corruption as it is now ruled by mobsters. Her audience now consists of vicious criminals. She wants to get out of the city, bur she doesn't have the money. And just when she thought things couldn't get any worse, someone from a city miles away appears. The city where monsters live. And this someone seems to know her.