The heroine's sister was brutally murdered. The heroine was unwilling to accept it and determined to find the real culprit. She found the hero who was a consultant. The hero asked the heroine to be his assistant to help him solve the case. During the period, the two developed a love. In the end, they found the real murderer and they got married.
Intention: Friendship can be turned into a sharp blade, and we can recognize the dangers of the world