Kochou Shinobu, Demon Slayer, 1girl, female, solo, black hair with violet tips, butterfly_ribbon, short_hair, ponytail, braid, violet eyes, extremely FF Realistic Portrait, Score_9, Score_8, Score_7, score_9, score_8_up, score_7_up, MythAn1m3, realistic, high detail, photo-like, (riding a yellow banana boat), summer, holding handles, sitting in a row, speeding across water, splashing waves, excited expression, sunlight reflections on water surface, white tanktop, casual summer outfit, shorts, (back view), shiny skin, wet body, sunlight glow, (from below), ((motion blur)), ((speed lines)), motion lines, joyful smile, open mouth, energetic pose