More than a Married Couple, but Not Lovers.

Third-year high schooler Jirou Yakuin has long harbored feelings for his childhood friend and classmate, Shiori Sakurazaka, and he pins his hopes on ending up with her in the school’s “marriage practical.” The program randomly assigns boy-girl pairs to live together as mock spouses, tracking and scoring how convincingly close they become. At the same time, the outgoing Akari Watanabe wants nothing more than to be matched with her own crush, the admired Minami Tenjin.

Instead, the draw pairs Jirou with Akari—while Shiori is assigned to Minami. Unwilling to accept the results, Jirou and Akari set their sights on climbing the rankings: high-scoring pairs can earn the chance to swap partners, provided both couples consent.