Scratch

Daisuke Yamada knew what Rikka Tanaka wanted more than anything: to kill the Black Diamond from the underworld of Shi. All of the people in the world of Ai despised the Black Diamond and worshipped the White Diamond. Rikka wanted to destroy the Black Diamond to impress the White Diamond and Daisuke was going to help her. It was not going to be easy though. They both came from a normal world and had magical parents. They loved eachother though, and love was not going to get in the way of their journey.
ill write more later:D