1girl, bath_yukata, blonde_hair, blue_eyes, bottle, breasts, coca-cola, collarbone, girls_und_panzer, hair_intakes, haori, holding, holding_bottle, japanese_clothes, kasai_shin, kay_(girls_und_panzer), kimono, large_breasts, long_hair, looking_at_viewer, one_eye_closed, onsen, open_mouth, round_teeth, sash, sitting, smile, soaking_feet, solo, sweat, teeth, upper_teeth_only, yukata