Suzu is a 17-year-old high-school student living in a rural town with her father. Wounded by the loss of her mother at a young age, Suzu one day discovers the massive online world “U” and dives into this alternate reality as her avatar, Belle. Before long, all of U’s eyes are fixed on Belle, when, suddenly, a mysterious, dragon-like figure appears before her.

Upon being sent to live with relatives in the countryside due to an illness, an emotionally distant adolescent girl becomes obsessed with an abandoned mansion and infatuated with a girl who lives there – a girl who may or may not be real.

Kentaro is an unsocial 35-year-old who lives with his parents and has never dated a woman. When Kentaro’s parents set up an arranged marriage interview with a girl named Nahoko and her parents, he falls in love for the first time in his life. However, the pair soon run into unexpected obstacles. Nahoko is vision impaired and can’t seem to break free of her doting parents. Meanwhile, Kentaro has no idea how to deal with the surge of new emotions he’s feeling.