This is a once-a-year festival. It's the best day for Kokoro in the countryside. Because it's a lawless day when all kinds of erotic acts are permitted only on the night after the festival. There's no problem with drinking with acquaintances who are not romantically involved, and having sex while drunk! In fact, it's a dream time that both men and women look forward to. Men and women are enveloped in the strange tension that is unique to festivals, easily blowing away any sense of ethics and becoming more and more lewd. They also wear yukata once a year! And it's the once-a-year sex festival where they get all messed up!