Brother Transformation? What Does It Mean That the Favorability Level Is Already Full?

(Cover is from online picture, deleted if infringement) As a lover of cross-marriage, Jiang Xing had fantasized about what he would look like when he turned into a girl, but he never thought that this would become a reality. But... Why did I find myself transformed into a girl when I woke up the next morning after the summer vacation of my sophomore year? ———————————————————————————————————— Zhou Luming, who has been friends with Jiang Xing for 14 years, from elementary school to college, knows that his good friend likes to change marriages, but he has never discriminated against him. But... Why was he attacked by his brother who turned into a girl on the morning of the second day of the summer vacation of his sophomore year? Brother's gender changed? What does it mean that the favorability level is already full? ———————————————————————————————————— Many years later, Zhou Luming: "Why did you choose me?" Jiang Xing smiled: "The answer to this question was already clear as early as that morning in the first grade."