She is a reclusive aristocratic girl, and he is a popular top male. Ten years of obsession made her move toward him, and she was willing to stay by his side as his assistant, silently protecting him, and vowing to be the person around him to protect him throughout his life. She had never been in the world, and he had been deeply involved in the world. It seemed like a redemption. She gave him her soul and body without hesitation. Even if she couldn't get a promise in the end, she was willing to die for him. She betrayed her family just to die with one person. She asked for nothing in return and sacrificed everything just to stay by his side.
Concept: Love needs to go in both directions, but only if one person takes the initiative first