What is the Japanese for "Hoyaku matsuri", a festival in Kunisaki, Oita prefecture for Taishakuten? (According to the NHK documentary "Seasoning the Seasons", episode "The Kunisaki Peninsula: Mystical Festivals in a Spiritual Land", "Hoyaku" means "lewd and vulgar").
Googling in English for hoyaku matsuri only got one hit, and googling in Japanese using either "ほやく 祭り" or "ほうやく 祭り" (in case the long vowel got lost when translating into English) didn't seem to get any relevant results. Searching ほやく and ほうやく in jisho.org names dictionary didn't get anything either.
It's possible the festival isn't large-scale enough to have any hits on google, or that maybe "Hoyaku" is a nickname, rather than the formal name of the festival.