Kagami tsurugi; A young lady who was sheltered her entire life, never given the chance to explore the world around her. The 'good girl' who has only ever known to play by the rules. Luka Couffaine; A kind young man who faces the world head on as if he were a hero; always putting others ahead of himself; someone who follows his own rules; The 'bad boy' of this story. What would happen if these two polar opposites become acquainted with one another?