Office First Love Reunion Alert

My first love, buried deep in my heart, has become my direct supervisor. Hajin has a very special benefactor. 'Kim Cheol-soo, the benefactor' was a kind and grateful man who took him into his home when he had nowhere to go and helped him until he graduated high school. So, at the age of 19, when the sponsorship officially ended, at his high school graduation ceremony where he graduated at the top of his class, Hajin waited only for 'the benefactor'. But the benefactor, the one he wanted to celebrate with, never came to his graduation. He broke his promise to him, as if to say it was over now that the sponsorship was over. That day, Hajin decided to end his unrequited love for the benefact...