1boy 1girl ahoge backpack bag ball barbarian_tk battery_indicator bikini blush breasts exercise_ball greyscale hair_between_eyes hand_on_another's_thigh hetero idolmaster idolmaster_shiny_colors implied_sex komiya_kaho long_hair micro_bikini monochrome navel open_mouth pussy_juice randoseru recording small_breasts solo_focus steam sweat swimsuit v