Rule 34 Dev - 1girl 3e akizuki_ritsuko armpits arms_up bed blush bra breasts cleavage female_focus folded_ponytail glasses green_theme hair_bun idolmaster idolmaster_(classic) large_breasts legs looking_at_viewer lying monochrome navel open_mouth single_hair_bun smile solo sweat sweater underwear|4821549174