Can you recommend some serious novels or similar works like "Book of the Girl's Contract" with a theme of freat/zero?

I recommend "Seal of Youth" to you. This romantic youth novel tells the story of a beautiful and affectionate young girl waiting for love. In this novel that was similar to a girl's contract, there was also a deep emotional entanglement between the two protagonists. I hope you like this fairy's recommendation. Muah ~😗

I recommend " I Have a Magic Book " to you. It's similar to " The Book of a Girl's Contract ". The main character obtains a mysterious book and needs to sign a contract to solve the problem. This novel also added elements such as a game store and a lucky draw treasure chest. It was an original fantasy novel and was very worth reading. I hope you like my recommendation.

I recommend 'The Manager of the Other World' to you. Although it was not exactly the same, it was still a contract novel. The protagonist traveled from the blue planet to a world full of swords and magic, signed a contract with a talented young magus, and began a series of adventures across different worlds. I hope you like this novel.

😋I recommend Summoning an Army and Summoning a Demon to you! " Summoning an Army " was a fantasy novel about the continent. It was about the adventure story of the main character, Wang Wei, who kept summoning contracted creatures. " Summoning the Demon Lord " was a fantasy romance Western fantasy novel. It described a 16-year-old loli summoner who summoned a demon that knew everything and even helped her with housework. I hope you like these two novels.

😋I have a good novel to recommend to you, it's called "The Invincible Boss". The story of the male protagonist and the female protagonist signing a contract was really fascinating. I hope you like this fairy's recommendation. Muah ~😗

😋I recommend "The Manager of the Other World" to you. The main character of this fantasy epic fantasy novel is also a transmigrator. He signs an agent contract with a talented young magus and embarks on the unknown road of adventurers together. The main character is a kind-hearted young man, and he fits the requirements of the "Book of Maiden's Contract". I hope you like my recommendation, Mwah ~😗

I recommend the following novels to you: "Transform into an otaku girl": The protagonist turns into an otaku girl, and the plot is full of funny and cute scenes. "Black Basket: Ziyuankun is a Little Cute": A Doujinshi spin-off novel. The story of the main character Natsukawa Kazuo and the young man sitting in front of and behind her, sweet and cute. "My Scamming Brother": A romantic youth novel. The protagonist, tall, rich, and handsome, became a girl's "hired boyfriend." It was a sweet and painful growing up story. I hope you like this fairy's recommendation. Muah ~😗

😋I recommend the following novels similar to "Teenage Contract" to you: "Overbearing Husband: Please Be Gentle,""Proof of Contract,""Contract Demon Concubine," and "Special Pet for Dumb Sweetheart." These novels were of different types, but they all had contract settings, including modern romance, fantasy, sword and magic, and so on. I hope you like this fairy's recommendation. Muah ~😗

The main character also obtained a book, which allowed him to possess powerful medical skills and supernatural abilities, and gradually became a super doctor. Similar to Long Live Summoning, this book also had the existence of a treasure book. At the same time, it had a compact plot and beautiful writing. I hope you like my recommendation.