1girl, 1other, alternate_costume, antenna_hair, artist_logo, ass, blue_one-piece_swimsuit, brown_eyes, brown_hair, competition_school_swimsuit, cowboy_shot, dated, double_bun, from_behind, hair_bun, kanon_(kurogane_knights), kantai_collection, looking_at_viewer, looking_back, naka_(kancolle), one-hour_drawing_challenge, one-piece_swimsuit, school_swimsuit, simple_background, swimsuit, wavy_mouth, white_background