1girl, arms_up, bare_legs, blonde_hair, breasts, collarbone, green_eyes, idolmaster, idolmaster_cinderella_girls, jougasaki_rika, loli, looking_at_viewer, looking_up, lying, mahochako, medium_hair, on_back, on_bed, open_mouth, short_shorts, shorts, small_breasts, solo, straight_hair, tank_top, thighs