Rule 34 Dev - 1boy 1girl baka_to_test_to_shoukanjuu between_breasts bikini blush breasts brother_and_sister brown_eyes brown_hair cleavage cross cross_necklace finger_to_mouth green_bikini huge_breasts jewelry large_breasts looking_at_viewer nail_polish naughty_face necklace no_eyes open_mouth pink_nails shiny_skin siblings sweat sweatdrop swimsuit trunks yoshii_akihisa yoshii_akira|2745809586