1girl, amagami, bikini, blush, breasts, brown_eyes, brown_hair, cleavage, collarbone, front-tie_bikini_top, front-tie_top, large_breasts, looking_at_viewer, medium_hair, navel, open_mouth, plump, sakurai_rihoko, serizawa_(serizawaroom), simple_background, sitting, smile, solo, swimsuit, white_bikini