A former Ojou-sama fromSansha San'youwithlongpurple hairandpurple eyes. She is usually depicted in herschool uniform- aserafukuwith a cream coloured top andpleatedbrown skirt. Most of her diet consists ofbread crusts. Youko is good friends withOdagiri FutabaandHayama Teruand is often followed around by her former butlerYamaji Mitsugu.