Bara Yashiki no Shoujo
Other names: バラ屋敷の少女, The Maiden of the Rose Mansion
Author: Ikeda Riyoko
Artis: Ikeda Riyoko
Ikeda's manga debut. In front of a mansion where roses blossom, Tomoko and her brother Kenichiro meet a mysterious girl. She looks interested in them but vanish each time they see her.