Lady Carolina, the overlooked daughter of a powerful duke, has always believed herself to be the black sheep amid her illustrious kin. Her father is the distinguished prime minister; her elder sister, a prodigious mage destined to become their nation's next Saint. In comparison, Carolina resigns herself to a quiet existence in their shadows until a sudden and unexpected royal decree alters her destiny, thrusting her into a political marriage with the formidable Bloodthirsty Prince of the neighboring Empire of Malcosias. Determined to prove her worth, Carolina takes a bold step into a world fraught with both political and mortal peril. As royal obligations intertwine with hints of true love and the stirrings of her own latent power, Carolina moves ever closer to understanding what it truly means to be exceptional. (Source: J-Novel Club)

As the illegitimate daughter of a count and his maid, Katrina was born into miserable circumstances. And now that she's lost her mother, the treatment from her stepsister and stepmother the countess has only grown worse. One day, her stepsister receives a royal order to move to the northern outskirts due to her unseemly behavior at a recent party. There, she is to learn proper conduct under the tutelage of the resident prince, rumored to be a cruel man. Not wanting to subject her daughter to such punishment, the countess decides to send Katrina instead. Katrina arrives in the north shaking in fear. But contrary to the stories, the merciless and cold-hearted prince is kinder than she believed. Might the pure-hearted Katrina find love in the wintry countryside? (Source: MangaPlaza)

Third season of Mushoku Tensei: Isekai Ittara Honki Dasu.

Nanoka passes through a portal into the Taisho era, where exorcist Mao reluctantly rescues her from the jaws of a grotesque yokai. When Nanoka gets back to the present, she discovers she has some new, incredible abilities. She returns to the past looking for answers, only to get caught up in Mao's investigation of a series of gruesome murders. As her questions about herself multiply, Nanoka learns that Mao is cursed by a cat demon named Byoki—and so is his sword. If anyone but Mao attempts to wield it, they are doomed. But when Mao's life is in jeopardy, Nanoka picks up his blade and swings! (Source: VIZ Media)