1girl, animal_ears, ayanami_(kancolle), black_sailor_collar, brown_hair, cat_ears, cat_tail, dated, kantai_collection, long_hair, no_pants, one-hour_drawing_challenge, panties, ray.s, sailor_collar, school_uniform, serafuku, side_ponytail, simple_background, solo, tail, twitter_username, underwear, white_background, white_panties