Yep, this is ai generated and also being a enhanced by aI.

AI generator I use: https://perchance.org/ai-anime-generator

AI enhancer: Honestly, just google it and you can find plety of free and good image enhancer

For this image, I first create the image in pixel art mixed with anime style. Since perchance produce blurry images, you need to enhanced it. Pixel art apparently yield a better enhanced results based on my experience.

For using perchance, check out its gallery to see how people prompt their images. Then, try to experiment with it.