The story centers on third-year high school student Jiro Yakuin, who gets saddled with his gyaru classmate Akari Watanabe for the class's "marriage training" project about practicing to be a married couple. Jiro is the complete opposite of Akari, but the two know that if they do well they will be able to switch partners to end up with their respective crushes, and so they force themselves to act like the perfect married couple.
Not far from the town of Domina lives Shiloh, a boy who keeps hearing a voice in his dreams about a mission he must fulfill. But what mission could he be needed for remains unknown. That all changes when he meets two Jumi, a race that’s hunted for their unique gemstones, as a sudden outbreak of attacks against the Jumi occurs. His dream, his quest, becomes clear—help the Jumi and their gemstones!
Minami Takahashi (髙橋 ミナミ, Takahashi Minami) is a Japanese voice actress affiliated with Haikyo. Her real name and old stage name was 高橋 未奈美 (same reading).