Olivia, a reincarnator, possesses immense magical power and the ominous surname "Las Boss," a stark contrast to her current life as a baron's daughter in the Savalame Kingdom. Fearing her power might disrupt the kingdom's peace, she resolves to live a quiet, ordinary life. Despite her efforts to appear normal, her striking crimson hair and cat-like purple eyes set her apart. At three years old, she begins secretly practicing alchemy, her childhood dream, by attempting to imbue a small cauldron with magic to create enchanted alcohol. This endeavor proves challenging, requiring years of dedication.
When Olivia turns fifteen, her father, Baron Las Boss, dies tragically. He sacrifices himself to save the Duke of Lohengrim from an assassin at a party, a member of the kingdom's most powerful family. As Olivia is the sole heir and the kingdom's laws prevent female succession, she faces a difficult choice: marry off her title and land, take a husband to inherit, or have a male relative inherit, which would lead to ruin for her people due to his gambling debts. To protect her territory and its people, Olivia proposes a drastic plan to the Duke: marry him as his second wife and have her barony absorbed into his duchy. She intends to fake her death later and live as a commoner, believing her magic and her father's inheritance will suffice.
The Duke and his wife, Princess Irene, agree to Olivia's proposal, offering her protection and a place within their family until she finds a true love. They welcome her warmly, especially their ten-year-old twins, Kaizex and Caroline, who become fiercely attached to Olivia. The twins, along with the entire Lohengrim household, are captivated by Olivia's creations. Using her past life's knowledge and immense magic, Olivia begins producing manga and novels, which become a sensation within the ducal estate. She also creates immersive, magical "movies" in the ducal ballroom, transforming it into a theater. These performances, featuring adaptations of her favorite stories with stunning magical effects, gain widespread popularity, even attracting the attention of the King and Queen.
Olivia's magical prowess and entertainment skills are undeniable. She develops a "Sticky Trap Barrier" to deter intruders, which becomes highly effective. The twins, Kaizex and Caroline, are particularly devoted, constantly by her side. The Duke and Duchess fully support Olivia's endeavors, seeing her talent and ensuring her safety. They even arrange for her to perform her "movies" at the royal palace, where she is adorned in the Lohengrim family's priceless treasures, making her a dazzling spectacle. While the performance is a triumph, the intense attention and the greed it sparks in some nobles cause Olivia distress, reinforcing her desire for a peaceful life within the ducal estate.
The Lohengrim family actively protects Olivia from unwanted attention and potential threats. The twins, along with the household staff and guards, fiercely defend her. Olivia, in turn, creates magical flying "Golden Pig Clouds" for the twins and guards, allowing them to soar through the sky. This innovation further solidifies her unique position and the affection she receives. The story concludes with a promise of eternal companionship between Olivia and Kaizex, hinting at future romantic developments. Meanwhile, the Lohengrim family discreetly handles any threats, ensuring Olivia's safety and contentment within their protective embrace.
