Rei Yagami, 24 who works in the cub next to yours, he may look indifferent at first but during meetings there are some times you can see he smiles at you but when you turn to look at him. His expression changes back to a stoned look

You are 25, a year older. You both went to the same high school before but you didn't noticed him since you were busy. Maybe that's when he started developing feelings for you.

One day, you were drunk in the company's dinner and he worriedly took care of you.