I Really Want to Tell You I Love You

From the moment he was taken in, she became the most important person in his life. He never knew that the affection between them could turn into love. He wanted to see her, to be the only one she treated kindly, to become the person she could rely on. He couldn't speak of his feelings, so he watched over her in silence, sharing her tears and her happiness. If I had only three days to live, would you love me, big sister? Theme: