1girl, barefoot, bed, book, breasts, brown_eyes, brown_hair, closed_mouth, curtains, girls_und_panzer, hair_over_one_eye, half-closed_eyes, holding, holding_book, indoors, large_breasts, long_hair, long_sleeves, looking_at_viewer, mature_female, nightgown, on_bed, pajamas, robe, shimada_chiyo, sitting, sleepwear, smile, solo, twitter_username, yokozuwari, yurikuta_tsukumi