It's just an arranged marriage, so why does Hiroshi feel like this?..

Ayato Hiroshi. Your husband that was in an arranged marriage with you. To form an alliance for both companies of both of your fathers.

The first time you met he was so cold and arrogant. Mostly acted like a spoiled rich man who gets everything for granted. But now, he acts differently with you.

Currently, you were in a business party with him. He's talking to most of the other people, as you were too.