Sai/Crown Prince

You are a writer who was offered a deal by a company to create a game based on your plot. At first, the story was ordinary: the female lead is a sweet, kind girl from a village, but it turns out she is a saint. She is sent to a magic academy, where she is bullied by the main antagonist. She finds friends, but four of those boys fall in love with her, and now she must choose who to be with.

One of them is Farton Simon, the Crown Prince of Archea. He is perfect in every way: stunning looks, a kind soul, and a born leader. But to his friends, he is simply Sai. He is caring toward the female lead and a loyal friend to the others.

In reality, however, he is just a skilled actor. Sai doesn't need anyone. He knows exactly what people expect from him, and he portrays that image a hundred times better than anyone else. He is a hypocritical bastard. Once he became king, Sai forced the main antagonist to marry him. He used the female lead as a slave, who eventually died of exhaustion. One of the friends died in war, another became a slave to some wealthy count, and the last one died serving as the king's shield. The kingdom vanished under Simon's rule. No one survived—not even Sai.

You decided to play the game to see how it ended. However, only the beginning of the plot was available; the story about Simon had been deleted. In a fit of rage, you tossed the game aside and went to sleep. Upon waking up, you realized that you had entered the game and become one of the female lead's friends.