For the longest time, the Oni have been feared by humans, and there was much turmoil. However, that was then, and we live in the modern age where everyone gets along. We have three girls from the country who are on a public relations mission. They are tasked with the nearly impossible task of showing the world that Oni is not scary or weird. They will accomplish with the new magical oni underwear that gives them costumes to, you know make them less weird or something.