An Observation Log of My Fiancée Who Calls Herself a Villainess

Exceptionally gifted to his own detriment, Prince Cecil had always found life effortlessly mundane. One ordinary day, his life took an unexpected turn when he became engaged to Miss Bertia, the Chancellor's daughter. This engagement, however, was anything but typical. "Prince Cecil! I must confess - I am the villain of this story!" Bertia's declaration was startling. She claimed to have memories of her former life, where she had been the antagonist in a "Otome game". Her lofty ambition was to excel as a villainess and thus have her engagement annulled. However, despite her plans for various misdeeds, her attempts have always been unsuccessful. Is his fiancée, who aspires to master villainous finesse, simply misguided in her endeavours?

Bertia, a self-proclaimed "villainous noblewoman," is engaged to Crown Prince Cecil. Eager to embody the role of a top-tier villainess, she immerses herself in her schemes-only to fail spectacularly at every turn. Amused by her antics, Cecil finds pleasure in watching her efforts unfold like a peculiar form of entertainment. However, one day, Bertia suddenly begins to avoid him outright. Convinced that she is destined to lose to the "heroine" of an otome game and be cast aside, Bertia has decided to distance herself from Cecil before the inevitable heartbreak arrives. She believes that by preparing herself now, the pain of parting will be more bearable—or so she thinks. But Cecil, fully aware of her misguided assumptions, has no intention of letting his oblivious fiancée slip away. Instead, he devises his own scenario-a plan to ensnare this foolishly earnest villainess in a future where she belongs by his side. A crafty prince and a completely clueless fiancée—who will outsmart whom? A romantic fantasy filled with surprising twists, culminating in a dazzling finish!

Crown Prince Cecil has wed Bertia, the self-proclaimed villainess. The two are now enjoying their happily-ever-after in what can only be described as the ultimate devoted love journey. However, their peaceful days are fleeting when Bertia's friend, Lysonna, reaches out with a special request-she wants Bertia to help plan her wedding. Still glowing from her own grand ceremony, Bertia eagerly travels to the Kingdom of Umyuve to reunite with Lysonna. Still, something feels a bit... off. To her surprise, Bertia realizes that Lysonna is actually a character from the very novel she read in her past life-and worse, Lysonna was the villainess, notorious for tormenting her younger stepbrother and his fiancée out of jealousy. Determined to protect everyone's happy ending, Bertia, once a top-tier villainess, makes a bold declaration: "I'll step in as your stand-in villainess!" And so, the curtain rises on Bertia's new role as the world's first Proxy Villainess!

While Bertia and Cecil are staying in the Seahealby Kingdom to help produce and attend the wedding of Princess Lysonna of Umyuve and Crown Prince Aleis of Seahealby, the ceremony ends without a hitch and they finally feel they can relax—or so they think. Out of nowhere, Bertia ends up being adored by the twin-headed serpent-the Serpent God revered in Seahealby! A maiden blessed by the Serpent God is called a "Saintess," and in this country, that position is extremely important. Bertia has absolutely no intention of becoming a saintess, but when Ramtak, the first prince of Seahealby, notices that the Serpent God is staying by her side, he approaches Cecil and, for the sake of his own ambitions, asks him to "hand Bertia over"?!

Having safely returned home after attending a wedding in the Kingdom of Seahealby, Bertia and Cecil find themselves surrounded by more and more happy news-friends' weddings, celebrations, and an unmistakably festive mood. Then one day, Bertia's contracted spirit Kuro and Cecil's contracted spirit Zeno decide it's time to pay their formal greetings—in the Spirit Realm, at each other's family homes. And since they're going anyway, Bertia and Cecil tag along. Their first stop is Kuro's home: the castle of the King of Darkness. But things take an unexpected turn when Zeno and Cecil are kicked out of the castle and ordered to "work together and clear the trial." To reunite with the ones they love, the guys set off-no backing down, no excuses, and absolutely no turning back!

Accompanying their contracted spirits, Zeno and Kuro, on a visit to announce their marriage, Bertia and Cecil travel to the Spirit Realm. After somehow convincing Kuro's parents to accept the marriage, the group heads to Zeno's family home. But before they can arrive, Zeno's well-meaning older sisters decide to take matters into their own hands. "We'll find Zeno the perfect bride!" Before anyone can stop them, they whisk him away. It turns out the sisters have already chosen his ideal match—Light Sparrow, niece of the King of Light. As Bertia and the others race to rescue Zeno, Light Sparrow becomes increasingly obsessed with making him her own, while directing an intense—and very personal—hostility toward Kuro. Can Bertia put an end to the chaos before it tears apart two lovers destined to be together? The former villainess throws herself into yet another outrageous adventure in the Spirit Realm to protect those she holds dear!

Just when it seemed peace had finally returned, a new storm is about to shake the royal palace! With Bertia's boundless energy showing no signs of slowing down despite her pregnancy, Cecil can't help but worry about his beloved wife. Meanwhile, another crisis erupts when Charles's older brother becomes the center of a shocking scandal. Not only does he have numerous secret children, but the affair threatens to ignite a political firestorm that could upend the balance of power within the royal court. As Charles quietly investigates the mess to clean up after his brother, his suspicious behavior sparks rumors throughout the palace that he's having an affair. Before long, the gossip reaches Anne... and, unfortunately, Anne's best friend, Bertia. "An unfaithful man deserves swift justice!" Furious, Bertia declares war on the supposed philanderer—but somehow Cecil ends up being labeled an "enemy" as well, complete with strict orders to stay away from her! Can the kingdom's most devoted royal couple survive their very first marital quarrel? The hilariously unpredictable adventures of the former villainess continue in this heartwarming romantic comedy!

As always, Cecil keeps a watchful eye on his ever-energetic wife, Bertia. But their peaceful days take an unexpected turn when Joanna, a duke's daughter and one of Bertia's friends, approaches him with a shocking confession. "My father is plotting a rebellion." Well, Cecil already knew that, but... Unable to turn down the request with Bertia involved, Cecil reluctantly—very reluctantly—begins investigating the duke's conspiracy, which involves the neighboring kingdom of Metametal. As his investigation unfolds, Cecil finds himself seeking assistance from a princess of the neighboring kingdom. But when they reunite after so long, he discovers that the princess has undergone a rather dramatic transformation. She's now a devoted Cecil fangirl! And as if that weren't enough, she even joins forces with Bertia to indulge in their shared passion for cheering on their favorite prince! With a rebellion brewing, unexpected alliances forming, and Bertia getting swept up in yet another round of delightful chaos, will Cecil ever find a moment of peace? Political intrigue, fangirl antics, and a possible civil war!? The sixth volume of this hilarious romantic comedy is here!