1boy 1girl arm_grab blush breasts brown_hair censored clothed_sex clothes_lift clothing_aside commentary_request hetero idolmaster idolmaster_cinderella_girls large_breasts long_hair navel nipples no_bra open_fly open_mouth panties panties_aside penis penis_out pink_check_school_(idolmaster) pussy sakaki_maki sex shimamura_uzuki shirt_lift skirt solo_focus underwear vaginal