Lord in the Palm of Your Hand

She was originally a thousand-year-old maple tree, planted by him himself. She didn't know his name, maybe it was because it had been so long that she, a climate elf, couldn't even remember it. She wanted to find him, and she wanted to tell him that the little maple tree he planted with his own hands had now grown into a beautiful girl who could recite poems, dance, and sing his favorite songs. She wanted to find him and sing to him herself. But in this vast world of countless prosperity, which one is him?