2girls, ass, asymmetrical_hair, back, black_one-piece_swimsuit, breast_cutout, breasts, brown_background, brown_neckerchief, framed_breasts, gloves, hair_between_eyes, headgear, headphones, i-13_(kancolle), i-14_(kancolle), kantai_collection, kimura_shiki, looking_at_viewer, looking_back, multiple_girls, neckerchief, one-piece_swimsuit, open_mouth, partially_fingerless_gloves, sailor_collar, school_swimsuit, single_glove, sitting, small_breasts, smile, swimsuit, swimsuit_under_clothes, white_sailor_collar