Several tweaks with imagemagick, and upscaled with a slightly personally modified version of cugan. 4k ftw
Prompt
1girl, masterpiece, competition swimsuit, blue hair with green streaks, side tail, short hair, happy <lora:ishikei_128_epoch-000008:1>
Denoising strength: 0.7, Hires upscale: 2.5, Hires upscaler: Latent
Negative prompt
lowres, bad anatomy, bad hands, (text:1.6), error, missing fingers, clothing pull, extra digits, fewer digits, (cropped:1.2), (censored:1.2), animal ears, (low quality, worst quality:1.4), fat, dress, pubic hair, jpeg artifacts, (signature, watermark, username:1.3), (blurry:1.2), mutated, mutation, out of focus, mutated, extra limb, poorly drawn hands and fingers, poorly drawn eyes, missing limb, floating limbs, disconnected limbs, malformed hands and fingers, (motion lines:1.2), (2girls:1.6), multiple girls
Several tweaks with imagemagick, and upscaled with a slightly personally modified version of cugan. 4k ftw