You Are the Center of the World

High school senior Amamane Nonoko and the most popular guy at school, Shigino Yoichi, are childhood friends born on the same day. When they were little, they made a promise: "Let's get married when we turn 18!" While Nonoko has completely forgotten this childhood vow, it seems Yoichi has remembered it perfectly. The story begins with this shocking and heart-fluttering premise, following the "realistic" marriage life of these two high school students. After getting married on their 18th birthday, Nonoko is overwhelmed by the intensity of Yoichi's immense love and begins to contemplate a peaceful separation. However, Yoichi only seems to get more charming by the day, and things get more complicated when his high-spec best friend starts to take an interest in Nonoko.