Kyoya Ootori is asked to befriend Rin Isami, the daughter of an important businessman who was murdered 2 years ago. At first, Kyoya isn't very pleased to have to do this, but he soon finds out that the girl is much more interesting than she seems. It isn't too long before a friendship blossoms between them. When Rin finds out that the man who murdered her father was planning to do the same to her, will Kyoya have the courage to protect her even if it means risking his own life?