Hyperventilation(2017)

It's winter. Lee Myung-yin came to the high school reunion and happened to meet Han Sun-ho, the man he had a crush on. However, for Ming Yin, because of his shy personality, it is difficult to have fun with other people. Ming Yin sneaked out of the party by smoking, and found that Ming Yin's Sun Hao also stood up and followed him...