1boy 2girls bare_legs bench bikini bikini_under_clothes black_hair blush border bra breasts breasts_out brown_eyes brown_hair covered_nipples cum english_text grabbing hair_ornament idolmaster idolmaster_cinderella_girls igarashi_kyoko kohinata_miho large_penis long_hair male_pubic_hair medium_breasts multiple_girls nipples open_mouth outdoors penis pongldr pubic_hair public_indecency school_uniform short_hair simple_background skirt smile swimsuit testicles thighs tongue tongue_out trembling unbuttoned unbuttoned_shirt underwear upskirt white_border