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...

The story begins when the main character, Tomo, who is liked only by men who have a girlfriend, starts a service called “Subscribe Kanojo” on SNS. It depicts the intertwined love lives of women who become “girlfriends” through a monthly subscription system.

What if there was a subscription service that allowed people to have a "safe affair"...? An ordinary housewife who has never thought about having an affair falls into the swamp of an adultery subscription service that she started out of a little interest and finally sinks into the abyss.

What if there was a subscription service that allowed people to have a "safe affair"...? An ordinary housewife who has never thought about having an affair falls into the swamp of an adultery subscription service that she started out of a little interest and finally sinks into the abyss.

What if there was a subscription service that allowed people to have a "safe affair"...? An ordinary housewife who has never thought about having an affair falls into the swamp of an adultery subscription service that she started out of a little interest and finally sinks into the abyss.

Rinka is single and works as a wedding planner. She is not good at dating men. Her colleague suggested to her to try a dating app. Rinka reluctantly registers with the dating app and gets matched to a man. When they meet, the man has a totally different appearance from his picture on the dating app. He seems like an ordinary man, but Rinka feels something is not right about him. Meanwhile, a series of murder cases takes place. The victims were all users of the dating app. The man that Rinka met through the app is investigated for the serial murder cases.

Rinka is single and works as a wedding planner. She is not good at dating men. Her colleague suggested to her to try a dating app. Rinka reluctantly registers with the dating app and gets matched to a man. When they meet, the man has a totally different appearance from his picture on the dating app. He seems like an ordinary man, but Rinka feels something is not right about him. Meanwhile, a series of murder cases takes place. The victims were all users of the dating app. The man that Rinka met through the app is investigated for the serial murder cases.

Rinka is single and works as a wedding planner. She is not good at dating men. Her colleague suggested to her to try a dating app. Rinka reluctantly registers with the dating app and gets matched to a man. When they meet, the man has a totally different appearance from his picture on the dating app. He seems like an ordinary man, but Rinka feels something is not right about him. Meanwhile, a series of murder cases takes place. The victims were all users of the dating app. The man that Rinka met through the app is investigated for the serial murder cases.

Rinka is single and works as a wedding planner. She is not good at dating men. Her colleague suggested to her to try a dating app. Rinka reluctantly registers with the dating app and gets matched to a man. When they meet, the man has a totally different appearance from his picture on the dating app. He seems like an ordinary man, but Rinka feels something is not right about him. Meanwhile, a series of murder cases takes place. The victims were all users of the dating app. The man that Rinka met through the app is investigated for the serial murder cases.

Rinka is single and works as a wedding planner. She is not good at dating men. Her colleague suggested to her to try a dating app. Rinka reluctantly registers with the dating app and gets matched to a man. When they meet, the man has a totally different appearance from his picture on the dating app. He seems like an ordinary man, but Rinka feels something is not right about him. Meanwhile, a series of murder cases takes place. The victims were all users of the dating app. The man that Rinka met through the app is investigated for the serial murder cases.

Rinka is single and works as a wedding planner. She is not good at dating men. Her colleague suggested to her to try a dating app. Rinka reluctantly registers with the dating app and gets matched to a man. When they meet, the man has a totally different appearance from his picture on the dating app. He seems like an ordinary man, but Rinka feels something is not right about him. Meanwhile, a series of murder cases takes place. The victims were all users of the dating app. The man that Rinka met through the app is investigated for the serial murder cases.

Ikeda Yoshimi, a 28-year-old editor of a literary magazine who loves otome games and loves good-looking guys, will be in charge of a gourmet magazine even though she is not good at eating with ultra-small meals. However, she notices that when she eats with good-looking men, her appetite increases, and she pursues "good-looking rice" to improve her small meals.