The male protagonist is a happy puppy who grew up with pampering. He has never experienced hardships and is full of infinite yearning for the future. During an enrollment promotion in the third year of high school, he met the female protagonist (the female protagonist) who graduated from the same school and was admitted to Kyogawa University. He fell in love with her at first sight, so he worked hard to get admitted to Kyogawa University. After meeting again at the university, the male protagonist began to pursue the female protagonist, but by chance he discovered that she had another identity - a killer from a mysterious killer organization.
The heroine is an orphan. After being adopted by a killer organization at a young age, she gradually grew into a killer. In the cold world of killing, she met a teacher who guided her to experience life. Later, the teacher was secretly assassinated, and revenge for the teacher became the girl's only obsession. When she discovered that the male protagonist had some connection with her mission, she chose to use him. Gradually, the pretense seemed to be mixed with a trace of true love...
