10_04ten, 1girl, bad_pixiv_id, bare_legs, barefoot, black_serafuku, black_shirt, black_skirt, blue_archive, blue_eyes, blue_nails, blush, breasts, cleavage, closed_mouth, collarbone, demon_horns, demon_tail, erika_(blue_archive), full_body, grey_hair, halo, hand_up, horns, index_finger_raised, nail_polish, necktie, red_necktie, school_uniform, serafuku, shirt, short_hair, sitting, skirt, smile, solo, tail