Image Refinement and Denoisng Prompt

A prompt used with Gemini Nano Banana to refine and denoise an existing illustration (first image) into a higher quality version (second image), specifically requesting a portrait lens effect with f2.4 aperture for backg

Please denoise and beautifully reconstruct this illustration image.

Also, please add background bokeh as if it were taken with a portrait lens at an aperture of f2.4.