1girl alternate_costume animal_ears ass bare_shoulders black_gloves blue_archive blue_eyes blue_hair blush breasts brown_pantyhose closed_mouth fake_animal_ears fake_tail from_behind garukichi gloves halo highres large_breasts long_hair looking_at_viewer pantyhose rabbit_ears rabbit_tail sideboob simple_background smile solo tail two_side_up white_background yuuka_(blue_archive)