покопался в википедии - такое ощущение, что это сборное имя: нанако - от Nanako Matsushima (松嶋 菜々子 Matsushima Nanako?) (born October 13, 1973 in Yokohama, Kanagawa Prefecture) is a Japanese actress and model. She is known outside Japan for her role in the horror film Ring. She was also a main character in A Story of Love., а надесико - от Nadeshiko Kinomoto (木之本 撫子 Kinomoto Nadeshiko?) is a fictional character in CLAMP's anime and manga series Cardcaptor Sakura. She is known as Natasha Avalon in the English adaptation Cardcaptors. первая - живой человек, вторая = аниме персонаж вообще, не должно быть два имени кончаться на -ко, т.к. это окончание собственно женского имени.