The four of them wore books together and became: the second male prince
Third male scholar
The heroine 1 is the daughter of the prime minister
The heroine 2 is a member of the assassination bureau of the enemy country
The second male lead loves the female lead 1
Heroine 1 and Heroine 2 exchange feelings
The third male likes the second male
After many dangers, the second male lead encouraged the third male lead to kill the female lead 2 because the female protagonist 1 wanted to elope with the female protagonist 2.
In the end, the second male lead and the female lead 1 got married.
The third male still didn't give his complete love to the second male
Concept: The second male lead has that kind of thinking, if he doesn't get it, he will destroy it. The third male is the kind of infatuated person who gives everything for love and is loyal throughout his life.