It was serialised in Jitsugyo no Nihon Sha's manga magazine, My Birthday, in 1990. Jitsugyo no Nihon Sha released the manga in September 1990.
The manga was published in "My Birthday" magazine, a publication by Jitsugyo no Nihon Sha, in 1990.  Jitsugyo no Nihon Sha released the manga in September 1990.