Weekend Only, Married Couple Exchange: The Night A Wife Is Embraced By A Stranger Nanami Misaki

In the fourth year of marriage, Nanami's husband Koji is busy with work since he just became independent, and combined with the rut they're in, lately even their conversations as a couple have stopped. In contrast to them, Hibiki, who moved into the apartment across the way, gets along well with her husband, and every time Nanami sees them as a couple, she feels envious. Eventually, Hibiki learns about the cold state of Nanami and Koji's marriage, and invites them to her home, proposing a weekend-only wife swap...