komatsu eiji, hoshino yumemi, planetarian, 00s, 1girl, 2004, aquarius (constellation), bare legs, blue background, blue hair, blue skirt, blush, capricorn (constellation), copyright name, corset, female focus, green eyes, hair between eyes, hat, head tilt, headgear, headphones, libra (constellation), long hair, looking at viewer, necktie, red necktie, sagittarius (constellation), simple background, skirt, solo, twintails, very long hair, zodiac