For the Young Villain’s Happy Ending

I possessed a character 14 years before the original story began. As the strongest Archmage in the Empire. ["…Protect them."] That’s the only thing I remember. Is it a plea to protect the ending, since the novel was discontinued? It’s a romance novel. The main characters will probably have a happy ending anyway. Since there's still time before the original story begins, I’ll just live quietly in my territory. But then I ran into him at the imperial palace. The main villain of the novel — the 4th Prince, who becomes a tyrant due to his tragic childhood. A beast-like appearance. A frail body with protruding bones. I felt bad for him, but if I change the character’s story, the future I know might change too… ["The child has never tasted warm soup."] Feeding him… that should be fine, right? But then— “Your Highness, doesn’t it feel nice to be clean?” “……” [Abuse and neglect were a daily occurrence for the child.] That night, when I saw a servant dousing him with cold water as he trembled silently out of habit, I made up my mind. “Your Highness. Would you like to become my disciple?” I’ll make sure you have a happy ending too. “Your Highness, if you keep staring like that, you'll get caught— by your guardian.” “That’s perfect, Marquess.” 12 years later, the now-grown 4th Prince still remained the Archmage’s disciple. “I want to get caught, you see.” Because he had realized the daring feelings he held toward his teacher. The official webtoon adaptation of For the Happy Ending of the Little Villain by writer Rogang! “Yes, I’ll protect the original story. But the main leads won’t be the only ones who get a happy ending!” Overpowered mage Reyna and her lovable disciples are coming to meet you!