China
From Jenny Everywhere Wiki
In one universe, Jenny Everywhere was the daughter of a merchant from China. (PROSE: Preludes and Distractions)
According to Sid, a particular location where “thick stalks of bamboo” each stood “without uniformity” in “pools of stagnant water” existed simultaneously in China, Japan, and the Gardens of the Gardens of the Strange and Wonderful House “depending on your perspective”. (PROSE: Our Strange and Wonderful House: The Secrets of Our Gardens (Part 2: Accursed Springs))