Manga Miss Not-So Sidekick

Haejon's favorite pastime was reading, as it relieved her stress. The stories from the books relaxed her. It was exactly like that until she woke up in her favorite book! But even here she was unlucky: instead of becoming the main character with three handsome boyfriends, she managed to become the villainous that everyone in this world hates. But, nevertheless, this is a great chance to live through your favorite story, and learn all its vicissitudes in the most detail. She now has a special responsibility for the truth of the story.