1girl, armpits, arms_behind_head, arms_up, black_hair, blue_panties, breasts, camisole, closed_mouth, collarbone, hiroki_(yyqw7151), navel, open_mouth, original, panties, purple_eyes, short_hair, simple_background, small_breasts, solo, stomach, twintails, underwear, underwear_only, white_background