秘密の花園

From Author Wars - https://authorwars.com/books/mi-mi-nohua-yuan-2908960.html

Overview:

Title: 秘密の花園
Author: 荻原規子
Year: 1997
Type: Novels
Series: 西の善き魔女 (The Good Witch of the West)
Number in Series: 2

Variant Titles:

2008. The Secret Flower Garden