If the series deals with the occult, it means: The TV series started without delay or postpone by the anti-occult movement based on the terrorism caused by the cult religion, Omu-shinri-kyo.
The cult, Omu-shinri-kyo, murdered a lot of people by their terrorism in Japan.
They used sarin gas in plural subway trains and killed 14, and about 6,400 were injured.
Many clever Japanese young people who went to Tokyo University were mind-controlled and participated in that religion, even participating in terrorism.
They were influenced by the occult.
After that, the TV broadcasting companies tried to avoid broadcasting TV programs related to the occult. They didn't want young people affected by the occult.
However, the TV series that dealt with the occult started without restraint.