πI recommend a book to you, and that is [Battle Break: Sign in to Bone Chilling Fire at the beginning of the game]. The plot of this book was that the main character had transmigrated to become the brother of Xiao Yan, a disciple of the Xiao clan. He and Xiao Xun Er were childhood sweethearts. He received the check-in system at the beginning, and he received all kinds of rewards along the way. He received 10 Duan Qi, the Warrior Technique Vajra Palm, the Beast Blood Fruit, and so on. In the end, he became a giant on the Dou Qi continent. Moreover, this book also meets the requirements given by the question. The female lead is only Xiao Xun 'er, so it can be said that it is very suitable for you ~ I hope you will like this fairy's recommendation. Muah ~π