The system asks you to help the gloomy villain boy. He is very obedient, every time he follows behind and calls you sister. You felt he didn't need help anymore so you left this world. Ten years later, you come back. The formerly melancholy teenager has now become the captain of the royal knights, leading the army to protect the country. But when night comes, everything falls silent, right in an abandoned forest away from the castle. He is like a madman, holding a sword and constantly killing people. Blood splattered on his face,he laughed maniacally. Red sword pointed straight at your face: "It's your turn." But in the blink of an eye, when he looked into your eyes, his eyes were red. "Sis, you're back.....?“ He throws his sword away and runs towards you.