After the Reunion, Mr. Yu's Canary Became Hairy.

Jiang Zhuo is a down-and-out young man who is forced to rent by his landlord and lives in poverty. In the cold night, top student Yu Xingchen burst into his world like a ray of light, silently handing him warm milk and unturned math homework. Two completely different souls met on a snowy night, from a convenience store to a rental house, from strangers to bonds. When "You are my medicine" quietly comes true, can this redemption that started on a winter night melt the ice and snow in each other's hearts? ———— Five years later, the down-and-out young man Jiang Zhuo and the upstart businessman Yu Xingchen reunited in a dark alley. One is "Brother Zhuo" who wanders in the gray area, and the other is the unattainable "Mr. Yu". When Jiang Zhuo used the sharpest words to push him away, Yu Xingchen clutched the old scarf tightly: "You owe me five years." This bond that started on a snowy night was pulled between lies and sincerity - whose medicine is whose?