Where does he/she live?
He lived in Seoul when he was an advertising artist, and now, he lives in Busan as an entrance exam art theacher = teacher.

How long has he/she lived there?
I don't know exactly, but I assume he has been living in Busan for about 10 years.

Is he/she married?
Yes, he is.

How long has he/she been married?
I don't know exactly, either, but I do know that he's been married for a while.
And he has a cat!