1girl, >, arched_back, ass, black_hair, black_sailor_collar, black_skirt, blue_background, blue_eyes, blue_one-piece_swimsuit, blue_sky, border, closed_mouth, competition_swimsuit, crop_top, crop_top_overhang, dated, from_behind, hair_between_eyes, hairband, head_tilt, holding, holding_clothes, holding_skirt, long_hair, looking_at_viewer, looking_back, monai-chan_(nii_manabu), nii_manabu, one-piece_swimsuit, original, sailor_collar, school_uniform, serafuku, shirt, short_sleeves, signature, skirt, sky, smile, solo, swimsuit, thighs, two-tone_background, undressing, unworn_skirt, white_border, white_hairband, white_shirt