Succubi, dullahans, snow women and vampires... We're a little different from humans and called "demi-humans." Lately, we've been called "demis."

This is a stimulating and heartful school demi-human comedy featuring those very unique "demis" and a high school teacher named Takahashi Tetsuo, who's highly interested in learning more about their daily lives and habits.

[Source: Crunchyroll]

During summer break, Tetsuo asks Sakie to join him on patrol duty for the local summer festival, which both the demis and Himari and her friends go to. As each group decides to check out a nearby shrine, they get spooked by some strange occurrences, which turn out to be each other. As the next term begins, Tetsuo converses with an invisible woman named Matsuri.