1girl, back, back_focus, bad_twitter_id, bare_back, bare_shoulders, black_choker, black_wings, blue_archive, choker, feathers, from_behind, halo, head_wings, koharu_(blue_archive), long_hair, looking_away, looking_to_the_side, low_wings, off_shoulder, pink_hair, red_eyes, shoulder_blades, simple_background, snail, solo, twintails, undressing, upper_body, wings, yonchan