Demon King's Contract: the Counterattack of the Poor Girl in Time Travel

Because of a contract made by the Demon King, high school student Bei Keyan traveled back to ancient times—— She became a poor girl from a poor family. Man wearing mask From the moment he was born, to Bei Keyan, Li Mobai was the kid from the house next door to his parents. His family background is perfect, his appearance is perfect, his temperament is perfect, his grades are perfect... He is a well-deserved school hero in the school. However, Bei Keyan didn't like it no matter how he looked at it. She always felt that there was another face under this guy's mask. Big Devil Who said that magic does not exist in this world? When Bei Keyan was shocked and surprised to discover Li Mobai's secret—— He smiled at her, and there was a hint of evil in the mystery: "Classmate Bei, haven't you always wanted to expose me? Now I'll give you a test." Bei Keyan said in a confused tone: "... What the hell?" "I'll let you travel back to ancient times. If you can survive all the way and successfully counterattack, then," "So what?" "Then all of me belongs to you." [Women from poor families should strengthen themselves] In the blink of an eye, Bei Keyan traveled from the modern metropolis to the ancient dynasty. And she was a low-class girl born into a poor family. She is so strong that in order to defeat the big devil Li Mobai, she decided to grit her teeth and survive in the new environment. Fortunately, she liked history more when she was studying, which greatly facilitated her adaptation to ancient life. My parents are useless and I have a lot of relatives. A remote village, troublesome things that don't make people worry... Bei Keyan finally understood the meaning of Li Mobai's "test". She'll take care of herself as she comes, she's not someone waiting to be bullied. Soldiers will come to block it, water will come and earth will cover it. Who is afraid of whom? Daily ridicule "Are you a pig? You can't even do such a simple thing?" "Pigs are smarter than you. It's so stupid." "You are so stupid, no wonder you were tricked." "... Don't tell others you know me, thank you." Li Mobai's voice can be heard from modern times to ancient Bei Keyan's ears at any time. He can also know her deeds in ancient times in real time. This devil's tongue was absolutely venomous, and he showed no mercy when he poisoned Bei Keyan. "Fuck you, play your basketball at school and stop bothering me." Bei Keyan said that she wanted to kick him away. [Help secretly] There is a kind of man with a sharp mouth and a tofu heart. Although everything he said was bad about Bei Keyan, deep down in his heart, he admired this little girl. Framed by relatives? ……Help. Set up by bad guys? ……Help. As long as you are in trouble, as long as you are in danger, as long as you need me—— The great devil will definitely appear. Far away in the horizon, close before our eyes There is a kind of distance, which means I am in ancient times and you are in modern times. When I was around you before, I didn't think you were good. But after hundreds of years of time and space—— Only then did I suddenly realize that all the displeasure I had felt before was all a disguised form of liking. Li Mobai, Li Mobai, can you hear my voice? Welcome to the pit The story of modern high school students traveling back to ancient times to level up and fight monsters. The male and female protagonists are one-on-one, no abuse, and carefree.