A lonely "demon lord" and a self-centered "hero"!?

What about "villager A," caught in the middle!?

This is a school that prepares people for roles in fantasy stories. However, those who possess the "traits" of a "warrior" or "wizard" are but a few. Most will become no more than mere "villagers." I, Satou, am also one of those "villagers"; but one day, a girl possessing the trait of "demon lord," Ryuugamine Ouko, set her eyes on me. She's short and a surprisingly calm, good girl, but she'll abruptly mutter about destroying mankind; give me a break. Taking up the opposition with passion is my childhood friend, Hikarigaoka Tsubasa; she's more trouble. This girl is also quite the beauty, but as soon as she makes up her mind, she's an absolute troublemaker...

This is a world that's slightly abnormal, with a slightly abnormal cast, interwoven in their dilemmas; a slapstick comedy!

Ai Shiratori is your average junior high school student with a crush on a boy, Hikaru Kamishiro. With a love so rampant and true, and an imagination as wild as any girl's Ai sometimes has rather... ecchi dreams. But none of those dreams could ever prepare her for the reality that came to her in the form of the Archangel Raphael. You see, Hikaru Kamishiro is not your average boy. Hell has plans for him and Heaven isn't about to let those plans come to fruit. While Hell sends their Hell's Apostles to get Hikaru to commit the seven deadly sins and drag him into hell, Heaven sends their secret weapon: Ai. What is Ai's mission? Nothing short of consummating her love with her beloved Hikaru... but wait by consummating you mean... sex?! Can Ai handle the Archangel's request and save her true love?