"Only if you vow to keep this secret and continue serving me your blood as "food" for eternity..." Ruri, a weak and overworked office worker, finds solace in Gilbert, her favorite character from the otome game "Vampire Mansion." One morning, after pushing herself too hard, her co-workers find her collapsed at the office, and her body is already cold... However, when she awakens, she finds herself in the game world, and even meets Gilbert...! She has been reborn as Fiona, the fiancee who is destined to be killed by him! Fiona's struggle to avoid this fate and to be close to her beloved character begins. Over time, her feelings shift to wanting to save this man who has never been rewarded. Thus begins the story of the cursed vampire duke and the reborn side character.

"Won't you have any regrets about breaking off our engagement?" Lady Daisy, the Marquess' daughter, is engaged to Prince Freddie and works hard to become the future queen. One day, Freddie catches an unknown disease. Aside of Daisy's desperate nursing and praying, a saint named Lula comes and saves Freddie. Freddie falls in love with the saint and starts saying that he has found "true love"! He easily dumps Daisy and becomes engaged to Lula. Once her engagement is broken, Daisy's story of fate begins...! This is a story of reclaiming one's life and destiny triggered by a broken engagement.

The knight from a noble family suddenly made a marriage proposal to me! He probably wants to get rid of me as soon as possible, so I'll have to work hard to make a baby! A love story between a common magic healer and an awkward noble knight.

First Princess of the Elixir Kingdom, Roselia is referred to as the 'Poison Princess' and is hated by many. She was unfortunately born with the power to create poisons rather than the ability to create 'Cure Potions'--a healing power passed down in the royal family. Roselia was given the chance to have her position solidified as the heir to the throne after her mother died. That was the condition? To be able to create Cure Potions before the age of 18. Roselia, alone, tries her hardest to create Cure Potions, and then she meets the one of the few people who have ever treated her nicely, Lord Elliott, her cousin! She finds herself drawn to him and he proposes!"Do you wish to rewind your life?" At her lowest moment, overcome with despair, the Poison Princess's fate changes, and she heads off onto a new journey to find happiness and... maybe even love...?

I'll play the villainess in order to destroy my kingdom! Princess Lilnette, who hates her homeland, plots to break off her engagement by being rude to the crown prince of a neighboring country...?

"Shuran... You will go to the inner palace instead." The daughter of a wealthy merchant, Sai Reiran, was chosen to become His Majesty the emperor's newest consort, however, on the trip to the Imperial Capital, she runs away with the son of another merchant! In order to fulfill the emperor's orders, and keep their heads, the family orders Reiran's cousin, Shuran, to take her place instead! They tell her to just pretend to be Reiran, while they search for the real one, however that's easier said than done! Shuran struggles to keep her real identity a secret and ends up being caught up in all sorts of trouble! Not to mention the intrigues and plots that go on daily in the inner palace... How will Shuran survive...?!

Lilia, the newborn daughter of a marquis, has the memories of her previous life! With cheat-like gamer knowledge she aims to become the strongest girl in this new "other world"!

"Just go ahead and call off our engagement!" Gina was betrothed at age 8 at the behest of her family. However she and her fiance, Carlo, have spent every waking moment with each other fighting. Despite Gina secretly harboring feelings for him. One fateful day, Gina tells him to just call the whole thing off and tries to run away from an unpleasant situation, however she ends up tripping and falling down a staircase which causes her to go unconscious. When she finally wakes up, and after a small misunderstanding, her family believe that she has amnesia, so Gina pretends to not remember asking Carlo to break off the engagement and everything from the past month. However, when Carlo does come to see her, he tells her, not about their engagement breaking up, but that he proposed and that she accepted. Now that he's seemingly all over her, where will their new relationship take them...?!

"Don't you think it's time we get divorced?"Liliange was married to the eldest son of a duke, Alekseid, at the tender age of eight for the good of her country. Even though she was only young, she fell hard for her much older husband anyway. However, on her 16th birthday, she overhears him telling a friend, "I bet that even when she's of age, I won't be able to see her as a member of the opposite sex at all." Now, with her love for Alekseid still in her heart, Liliange decides to bring the whole marriage to an end by asking him to divorce her...! A story of how earnest feelings can sometimes be overlooked. Liliange and Alekseid's love-filled marriage story begins now!

Philia is the daughter of an Earl and wishes to spend her life enjoying her hobbies and doing the things she likes. She has no interest in socializing with other socialites of her age and in dating the opposite sex. She enjoys reading books and listening to the stories of the coming and going merchants. She relied on her parents when it came to marriage. That is when Philia receives a marriage proposal from Duke Claude Morris, who is admired by everyone. Being unable to decline, Philia marries Claude. ? On the first night of being married, they return to the Duke's estate where he suddenly pushes her away saying "don't come near me." With a stern face, Claude says "I don't plan on having a man and woman relationship with you," and Philia begins to ask the reason but...

The world, it seems like it is that of the Otome game "Welcome Princess", but there's something off!? Elliot, the eldest son of a Marquis family and one of the targets you can go after is an insanely handsome young man, both cool and wicked, master of both pen and sword. His only weakness (?) is that he is "hopelessly in love with his (the villainess?) fiancee Francine!" The story of Elliot and how he began drowning in love for his fiancee at the age of 7 starts here.