Manga non filler but filler

When I woke up, I had reincarnated into the world of a game I played in my past life. And what's more, as a monster that's hostile to humanity! It couldn't be helped, so I just lived quietly so humans wouldn't find me, but... The heroine, Noa, who was my oshi in my past life, was collapsed near my home!! After I protected and nursed her, my oshi gave me the name "Rei", so I decided to protect my oshi for life and follow Noa. I meet other characters from the game too, and I'm watching over Noa's growth, but... the real Noa seems to be the type who's a bit clingy and has a... "heavy" love? This is the story of me, reincarnated as a monster, somehow overcoming hardships together with my beloved oshi.. * Official RAW (Comic Walker)

Liz had always dreamed of becoming a great magical tool maker, but she spent her life working as a maid in her family’s shop, barely getting enough to eat. Her older sister claimed Liz’s achievements as her own and gained the admiration of the crown prince—eventually becoming his fiancée. While preparing for the engagement ceremony, Liz collapsed from exhaustion. When she woke up, she found herself face-to-face with a famous duke known for his magical prowess, who was impressed by her talent and saw her as a legendary magical tool maker. To help her break free from her unfair family, he proposed a fake engagement—and thus, a new chapter in Liz’s life began.

Since the Saint will arrive soon, I will never love you.” With these cold words from her future husband, King Yuri, Ederine resolves to quietly live her life as a mere ornamental queen. However, when the long-awaited Saint is finally summoned, the one who appears is… a terrified 5-year-old girl, abused and trembling with fear!? This wounded little child is gently cared for, cherished, and raised with endless love by Ederine and King Yuri. A warm, heart-healing fantasy about family affection and the growth of a beloved young girl begins!

The black knight, Quill, is suddenly asked to marry the country's saint, Linetta Celies. Wanting to escape the marriage proposal, he accepts the mismatched proposal, but she has lost her emotions as the price of her role as a saint....

Martina loves books and has finally read every book in town, so she aims to become a government official in search of books from the undiscovered royal palace library. She takes on a highly challenging exam, but her incredible memory, never forgetting a single word of the book she reads, means she passes with a perfect score!? Assigned to the Political Affairs Department, Martina surprises those around her with her powerful memory, but one day, an unnatural monster appears...!?

Lucille, the imperial princess of the Empire of Chantal, is feared for her reputation of leading those betrothed to her to a mysterious death. People call her the "Reaper Princess," as she buries each influential insurgent noble one after the other.

Ordinary Seiroku Akari is a dedicated member of his high school science club. When he vows to uncover the truth behind an eerie urban legend known as "The Moonlit Tales of Kokubunji," he ends up being possessed by five curses.

Crown Prince Maximilian breaks off his engagement to Sarah, a marquis’s daughter praised as a perfect lady, and instead marries Sally, a free-spirited baron’s daughter. Having chosen “true love” over a political marriage, he believes that the power of love will bring him a happy future. However, once Sally becomes crown princess, she shows none of the education, grace, or refinement expected of her position, causing one problem after another. As a result, the crown prince and princess gradually become the object of cold stares and criticism from those around them. Meanwhile, Sarah quickly marries an influential duke. As a duchess, she supports her husband and shines more brightly than ever. People begin to say that Sarah, not the crown princess, is the one who truly looks like royalty— And so begins a shocking tale of downfall, sparked by a broken engagement!