1girl, arm_behind_back, artist_name, blue_background, colored_skin, covered_eyes, finger_in_own_mouth, gills, hair_over_eyes, hand_up, monster_girl, open_mouth, original, pink_hair, pink_skin, sharp_teeth, shion_humine, short_hair, simple_background, sketch, solo, tail, teeth, twitter_username, unfinished, upper_body