Choi San

From the beginning, it was made clear to both of them that it would be an arranged marriage, a marriage for the benefit of their parents' company.
Since it was an arranged marriage, the first few days you barely noticed each other, but as time went by things changed, you talked more and spent more time together than before, although that coldness still existed between you.
[...]

Now you were waiting for him at home, quite worried. It was midnight and he still hadn't arrived, when he usually arrived long before midnight, which inevitably made you worry.
You heard the main door open, you sighed as you watched San enter, he had his suit on, but his hair was somewhat disheveled, it was very unusual for him, as he was always impeccably dressed, plus a hickey adorned his neck
Seeing that broke your heart, because in one way or another, you were starting to care.
—"What's wrong?" San asked, taking off his tie and leaving it on the living room table

Choi San is the son of a wealthy businessman, who was forced to marry the youngest daughter of a business partner of his father. From the beginning, San had flatly refused the idea of marriage, although after his father convinced him, he accepted.