Our hero is on a quest to "defeat" the Demon King... but it turns out... its a demon... queen?

It's finals time, but tests aren't the only things stressing out Yuuta, who's literally being smothered with affection from his beautiful sisters:...

This is the first OVA adaptation of the 1st and 2nd volumes of the manga authored by Herio, "Yamitsuki Pheromone", a talented author of COMIC...