More Than a Married Couple, But Not Lovers(夫婦以上、恋人未満。)

High-school junior, Jiro Yakuin, gets partnered with his "gyaru gurl" classmate, Akari Watanabe, for the school's "marriage training" project, wherein students practice being a married couple. Despite being total opposites, Jiro and Akari act like the perfect couple, knowing that if they do well they could switch partners to be with their respective crushes.