She was ordered to go to the academy to assassinate the family of the enemy who killed her master's husband, but she couldn't resist the prince's love for her and actually fell in love with him. Was the kindness of the past and the love of today, betrayal or murder?
She was good friends with her, and he dated her in order to get close to her. Gradually, he fell in love with her, but when she learned the truth of the matter, could they still love each other like before? With his and her intervention, how will the situation develop...