The upper portion of the image tends to be brighter due to the material.
This can be suppressed by including "gradient background", "gradient hair", and "sunlight" in the negative prompt.
Weight: 0.8-1.4
Triger
Shizumori Nodoka: shizumorinodoka, hairband
Outfit1: school uniform, white shirt, short sleeves, grey bowtie, black skirt, pleated skirt
Outfit2: white one-piece swimsuit, two-tone swimsuit
Optional
Male: ozaki, very short hair, black eyes
Training on anyillustriousXLFor_v11.