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)

One day, Riri Amano, who is living in debt left behind by her parents, suddenly finds herself as the "villainess" of another world. When she wakes up, a handsome knight is taking care of her...? After a fateful encounter in prison, she finds out the truth about her special skills and with her positive attitude, she gets involved in the world around her. And what is the inevitable happy ending...! [Original Web Novel](https://ncode.syosetu.com/n1010he/) [Original Web Serialization](https://gaugau.futabanet.jp/list/work/62c793f07765610f14040000)

Kirara, a modern-day Japanese high school girl who has lived her life as a "gal," suddenly finds herself in another world as Chelsea, a "failed young lady." Unaware of the common sense of aristocratic society, unfamiliar with the rules of reincarnation in another world, and with no allies due to her younger sister Jennifer's schemes, Kirara/Chelsea finds herself in a hopeless position. Nevertheless, she sets out to somehow turn the situation around. She seeks instruction from a tutor who is known for his strictness, and Chelsea overcomes the tutoring with her natural guts, and her reputation in high society skyrockets! She also becomes close with Crown Prince Valentino and those around him...!? (Source: AlphaPolis, translated)

Colette Milliact has been subjected to rigorous education for many years as the successor to the Earl's family. One day, her younger sister Liliane takes away both her fiance and her position as the successor to the Earl's family. Colette despairs when she learns that everything she has endured for her sickly sister was planned by her. She decides to give up her position and sever all ties with her family. Colette leaves the Earl's family with nothing but the clothes on her back, but she reaches her physical limit and collapses in the forest. However, a young man she has never met saves her. "Colette, please marry me." Who is the young man? This is the story of a young lady who has had everything taken from her by her sister who pretends to be sickly, and how she finds happiness. (Source: Ura Sunday, translated)

“I hate everyone… So I’ll destroy everything.” Ashley, a saint blessed by the gods with mysterious powers, has lived her life devoted to others. The crown prince of the kingdom, Austin, was born frail and sickly, but through Ashley’s healing powers, his condition improved, leading to their engagement. Every day, she uses her magic to heal him, soothe the people, and maintain the barrier that protects the land from monsters. Forced by her parents to live a life of constant self-sacrifice, Ashley comes to believe that as long as she keeps working hard, everyone will love her. Yet her parents’ constant quarrels never cease, and after a certain incident, even her relationship with Austin begins to fracture. The only person who’s ever truly protected her is her beloved older brother. Just when she feels completely hopeless, Ashley encounters a mysterious, beautiful young man… one who may change her fate forever. https://www.cmoa.jp/title/339621/

Magritte, the second daughter of Viscount Nefershall, has no magical powers and was raised as a servant by her talented older sister, who called her "leftovers." Even in this situation, the cheerful Magritte lives happily every day, fueled by her favorite cooking and memories of her past life. One day, she takes her sister's place when she runs away and is married to her sister's fiance, Marquis Ganongoulf. The Marquis is feared by everyone, rumored to wield the terrifying "corruption magic," but Magritte doesn't let this situation scare her. Instead, she seems genuinely excited to experience the Marquis's magic...!? (Source: Kadokawa, translated)

"You won't love me?" That's fine! I won't give in to adversity or mistreatment; I'll seize my own happiness! (Source: Kadokawa, translated)

Judith, a minor character in a certain story, is a marquis's daughter despised by her family and fiancé, who has resigned herself to her miserable fate. "—What a boring life," thought the protagonist who was reading the story... until she suddenly found herself reborn as Judith! Having learned of the relentless pressure Judith endured and her desperate struggle to survive, the protagonist vows, "I'll make them all pay on her behalf!" She decides to put "a certain plan" into action to break free from the shackles binding Judith... A dramatic reversal from a life of oppression! A thrilling "serves you right" fantasy begins here!

Summoned to another world as a Saintess, Sara believes her destiny is to save the Kingdom of Linus. With the encouragement of Prince Curtis and her friend Angelica, she gives her all to create a "Great Barrier" against the demons. But the ritual is a trap. The barrier demands her life as the price. Betrayed and murdered by those she trusted most, Sara's dying prayer to the goddess is not for salvation, but for a chance at revenge. Granted a second chance, she makes a pact with the enemy, the Demon King Yomudoit, vowing to tear down the kingdom with her own hands. https://www.cmoa.jp/title/354224/

[title](https://www.cmoa.jp/title/295238/) It's been ten years since they met at their first tea party. Wendy, the second daughter of a viscountess, dreamed of a happy future with her beloved fiancé, Frederick. However, one day, she suddenly witnesses the scene of an affair between her sister Janet and Frederick. What awaited her in the remote place where she married in tears was a frail, shady, next-generation frontier. With a life full of cleaning, laundry, animal care, and other things they have never experienced before, the newlyweds have a difficult time ahead of them. This is a story of a damaged marriage between two people, and the story of their love for each other!

https://www.cmoa.jp/title/330289/