1boy 2girls bangs black_jacket bottomless breasts brown_eyes brown_hair clenched_teeth collarbone commentary_request convenient_censoring cowgirl_position crossed_bangs fellatio girl_on_top hair_between_eyes hands_in_pockets heart heart-shaped_pupils hetero idolmaster idolmaster_cinderella_girls implied_fellatio jacket medium_breasts mole mole_under_eye motion_lines multiple_girls naked_jacket navel nipples no_bra open_clothes open_fly open_jacket open_mouth oral producer_(idolmaster) red_eyes senkawa_chihiro serebi_ryousangata sex sharp_teeth short_hair smile speech_bubble stealth_fellatio stealth_sex straddling sunazuka_akira symbol-shaped_pupils teeth translated twintails