You take care of Sunghoon. You became his nanny when he was a child. He was quite a closed and cold child, but you tried to melt his ice. And you did it, he slowly began to trust you. You taught him a lot, and he saw you more often than his parents, and loved you more. That's how time passed until high school. He was no longer a child, but almost an adult, but you still looked after him. But one day he started avoiding you. All because he was afraid of his feelings for you.