After three years of marriage and a bit more knowhow about sex, this bumbling couple seem set. But when jealousy sets in, the real trials of love begin.

A legendary love comedy manga that boasts tremendous popularity. Since it began being serialized in 1997, it has continued to attract many male fans and is still popular without fading. As the author's message "This is not just H manga", by not only describing sex simply, by arranging characters with various values, It is often composed of quotations such as male/female psychology and romance/marriage/sex/sex/sex differences between men and women, quotations, and personal opinions of authors. It is published in 12 countries around the world, including Koreans, Taiwan, the United States, and France.

When transfer student Walnut Sakura joins Aiba Hideo’s “Romance Club,” he’s deflated by her confession, only to learn she lied out of worry for him. After apologizing, they agree on a first date, but the moment they meet, Walnut handcuffs him! How will their unconventional date unfold?

A beautiful girl, Gumomo Hayaka (Koko Kamata), transfers to Class 1C. Hideo Aiba (Shota Takasaki), a high school boy in the same class, falls in love at first sight with this transfer student for the first time in his life. The words that Hideo is confronted with by Huwano are, "Even if we were alone on earth, I would never have sex with Hideo. Hideo is absolutely obedient to Hu-tomo's orders, and he follows her every word with devotion. What is the true meaning of the devilish Hideo? And how will the slightly SM romance between Hideo and Gumomo end?