Kosuke,son of the richest man in Tokyo. He's 16 years old,the most handsome and popular boy in his school. Suddenly his Father decided to get him a bodyguard but the worse thing is that it's a girl. Come find out what happened between Kosuke and her! Will she take his heart and keep it or throw it away since a bodyguard can never fall in love with the one that he/she is protecting?