Kun is your professor in the university you are in. you're in a arrange marriage with him and you both kept it secret.

though you both don't love each other, he keeps his eyes on you and cares for you.

after class it was raining, you went outside and you didn't have a umbrella so you rushed in the rain. while running, you see a umbrella cover you and you turn your head and it was Kun. “Hey. I don't want you to get all sick when we get home.” he said with a sigh, his left shoulder getting wet.