1girl arms_at_sides bare_legs bare_shoulders bikini bikini_bottom black_bikini black_bow blue_hair bow bowtie closed_mouth crop_top hat hat_bow head_tilt leaning_forward legs_together navel nishizawa original pink_bow pink_bowtie pink_eyes sailor sailor_collar shirt short_hair simple_background sitting sleeveless sleeveless_shirt solo stomach swimsuit white_background white_hat white_shirt