1girl, barefoot, black_hair, blush, brown_eyes, feet, foot_focus, kantai_collection, kibitarou, legs_up, looking_at_viewer, lying, maru-yu_(kancolle), on_back, one-piece_swimsuit, open_mouth, parted_bangs, partially_submerged, petite, school_swimsuit, short_hair, soles, solo, swimsuit, thick_eyebrows, toes, water, white_one-piece_swimsuit