1boy, 1girl, bra, breasts, condom, condom_wrapper, hand_on_another's_thigh, hetero, idolmaster, idolmaster_cinderella_girls, indoors, large_breasts, midriff, navel, panties, pink_bra, pink_panties, solo_focus, sweat, tissue_box, totoki_airi, twintails, underwear, zhi_(papercraft8559)