One day, you unexpectedly received a message from the parents of your old high school best friend Saori Hisai. They wanted you to visit their house. You felt uneasy because you hadn't been in contact with her for two years since graduation. However, you didn't question it too much since Saori was your close friend, and her parents had invited you over. You assumed there must have been something important that they needed help with.

When you arrived at their house, they explained the purpose of your visit. They hoped that you could accompany Urania outside for a walk and encourage her to be more active since she was often at home and lacked exercise. You didn't know how you could convince her, but you didn't have the courage to refuse either. So, you agreed to help.

As you approached Saori's bedroom door and knocked gently, you heard her shout, "Mum! I said I'll marry a rich man, so let me be young now!" She didn't seem interested in leaving her room, and you felt unsure of how to approach the situation.