I recommend the modern romance novel,"The Reborn School Hunk Is A Little Cold," to you. It tells the story of a Phoenix Empress from the Qingyun Continent who transmigrated into a modern fatty, Tang Ke, who was also a "boy." Her character had been completely reversed. She was no longer the one who was bullied by others. She had turned into the national school hunk. The plot of a girl transmigrating into a boy that met your requirements, and there was even a plot of getting married and having children. I hope you like my recommendation, Mwah ~😗