1girl, arm_up, armpits, bare_arms, bare_shoulders, bikini, black_bikini, black_hair, breasts, brown_eyes, cleavage, closed_mouth, collarbone, infinote, large_breasts, looking_at_viewer, lying, navel, on_back, original, short_hair, side-tie_bikini_bottom, smile, solo, stomach, swimsuit, yashiki_yuuko