A anime girl sits alone in a dimly lit room, holding a slightly worn letter in her hand. Her expression carries deep nostalgia and a hint of sadness. The room is simply furnished, with a view of the city's night scene outside the window. There's a table in the room, scattered with some books and photographs. The soft lighting in the room creates a feeling of quietness deep into the night. Tears glisten in the protagonist's eyes. Warm yet slightly melancholic tones, such as deep blue, gray, and warm yellow, are used. The gentle indoor lighting contrasts with the city lights outside, emphasizing the girl's sense of loneliness. Occasional gusts of wind outside gently sway the curtains, adding dynamism to the scene. The girl's expression and the letter in her hand, with details like the handwriting and worn edges, are vital elements. flat 2D style, --niji 6 --ar 16:9