1girl, ass, backless_outfit, bare_back, blue_archive, blush, breasts, butt_crack, halo, hand_on_own_cheek, hand_on_own_face, head_rest, looking_at_viewer, lying, medium_breasts, meme_attire, on_stomach, purple_eyes, purple_hair, reia_76, ribbed_sweater, sideboob, simple_background, smile, solo, sweater, twitter_username, two_side_up, virgin_killer_sweater, white_background, white_sweater, yuuka_(blue_archive)