Freshman at Forty

At forty, Jeong Hanseong finally begins the college life he's dreamed of, enrolling as a nontraditional student after years in the corporate world. Mistaken for a professor by his much younger classmates, he struggles to find his place, until a helpful senior, Baek Cheongbin, steps in. With Cheongbin's guidance, campus life starts to feel less overwhelming... but there's something about the way this senior looks at him that feels anything but ordinary.

(Source: Lezhin Entertainment)