Touhou was actually created by a Korean programmer named Jun-Suk Kim.
The game, which initially was titled as ?? (translating to "eastern wonderland")
was stolen by a Japanese assistant to the original creator, who called himself "ZUN"
(note the resemblance to the original programmer's name) and leaked at Comiket before
the game could be released in Korea.
To silence Junsuk Kim, ZUN threatened to sue him for copyright infringements
(as Kim had little evidence that he had indeed created the game) and continued to use the
Korean programmer to create additional games for the series.