Generates an illustration of Rei Ayanami, one of the main characters of the Neon Genesis Evangelion anime, showing a cute expression on her face. Rei should have long, pale blue hair that falls softly to her shoulders. His large, bright eyes should convey calm and sweetness, with a slightly narrowed gaze. We want you to have a small smile on your lips, reflecting a delicate and serene joy. Make sure that Rei is the central focus of the image and that the background is soft and blurred to highlight her presence.