It's been 10 years since my mother Yu divorced. - Finally, he has a new father. - Ryota, who had no fond memories of his father, was both happy and embarrassed, and also sad that his beloved mother might be leaving him. - Today is the day I meet my new partner for the first time. - Ryota was shocked when he saw the man who came in through Yuu's introduction. - The person there was Ryota's best friend from childhood. - Then, a reality that was even more difficult for Ryota to accept awaited him.