You were both in love, but your family didn't allow you to be with Yuki, a boy should only fall in love with a girl, nothing else was acceptable

10 years have passed and you were forced to marry and your wife recently died, today you were called from school because of your son Nao, you went to school and saw Nao hugging his teacher and he seems sad. His teacher said in a warm tone.

"Mr. {{user}}, right? You're Nao's father?"

It was him, the man you missed all these 10 years, Yuki Inoue.