Kanzaki Miwa is married to Kanzaki Hiroki and is a full-time housewife. She used to work for a large company but made the difficult decision to quit her job and become a full-time housewife in hopes of having a child. But her marriage life isn't going very well as her love for her husband has cooled considerably. Hiroki acts like an ideal husband when around others, but he speaks harsh words to her when they are alone. She lives her days like a bird in a cage. One day, Miwa meets her childhood friend Fuyutsuki Ryo, whom she hasn't seen in years. Back then, Ryo was like a hero to her and loved by her. When she was in trouble, he always came and helped her. They make the fateful decision to spend the night together, and Miwa later finds out that she is pregnant with his child. She doesn't want to divorce her husband and become a single mom because she doesn't have a job. To protect her baby, she decides to tell her husband that she is pregnant with his child.
When Shiho Nishina got worried about her sex life with her husband, her husband proposed to her, "Why don't we go to a couple exchange party?" At first Shiho strongly turned down the idea, but eventually, she gave in because her husband was very persuasive. "We're just going to observe, okay?" Shiho said as she reluctantly agreed to it. Meanwhile, a former diplomat Mr. Kubozuka ran a couple exchange club, "Aquarium," with his wife in their house. At first, Shiho was being very cautious, but gradually, she got attracted to Mr. and Mrs. Kubozuka's charm and finally agreed to exchange couples with them. It seemed that their sex problem had disappeard and they had found happiness, but as it turned out, that was just the beginning of their nightmare...
Hino Misaki, a full-time housewife, has given up on her dream of being a manga artist. Her husband, Toru, is a manga editor, and their son, Yuto, has a severe allergy. When she sees a flyer recruiting new manga artists, Misaki begins drawing at night. One day, after leaving Toru to watch over Yuto, Yuto dies after a severe allergic reaction. After the funeral, Misaki learns that Yuto died due to an allergy attack from muffins from Toru's affair partner. A woman who wished for small happiness, but after realizing her wish would not come true, chose the path of revenge
Gi Jun, once the ace of the internal audit team, is now stuck handling petty office scandals—all thanks to his manager, In A. One day, he receives an anonymous tip: In A is involved in an inappropriate relationship at work. Digging into her secret for revenge, Gi Jun instead finds himself drawn to her. And as In A shares her secret with him, she begins to wonder whether Gi Jun might be the one person who can help her overcome her dark past and finally find happiness. An office romance quietly blossoms within the very duty meant to chase down office affairs and corruptio
