Seventeenth of Late Autumn

My dad ran into his first love and impulsively married her.

But less than half a year after my stepmother moved in, my father passed away. She went on vacation too, leaving behind a son in his final year of high school.

Before he died, the old man left a will saying I had to take care of his first love's son until he graduated from university before I could inherit the estate.

The old man sure left me with a difficult problem.