1girl, ahoge, blue_eyes, breasts, collarbone, covering_breasts, covering_privates, crying, crying_with_eyes_open, katayama_kei, long_hair, looking_at_viewer, medium_breasts, nude, open_mouth, parted_lips, red_hair, seihou, shuusou_gyoku, solo, tears, upper_body, very_long_hair, vivit_(erich's_daughter)