Introduction: Light and dark never coexist.They contradict each other.The enemy of each other.How about I tell you that love once exist them long time ago?Do you want to hear a story between them?'Be careful not to be swallowed in an endless abyss of darkness"-Yin"You never really care about me,I am the only one who's foolishly watching your back"-YangBetrayal and revenge.....Starts between themEndless Cycle of life is about to begin.....