Yuta, a childhood friend, is not a friend nor a family member ... nor a lover. I thought this relationship would continue forever. I felt that if I confessed that, this relationship would be broken, so I hid my feelings with Yuta and became an adult, and Yuta was engaged to another girl. On the night I was introduced to my fiancée, Miki-chan, I glanced at their sleepy face when they fell asleep together, and decided to end their long-term love affair.