Unrequited Love Breakup Song

I have been in unrequited love for 10 years since I was a sophomore in high school. I can't stand Seok-gyun, who cheats on me from time to time. Yang Yang-hae said goodbye to him. The day after moving, saying he would never have unrequited love again, I went out at the sound of the door ringing from dawn. Outside the door was a child crying with milk. Yang Hae, who rang the doorbell next door to soothe the child, He encounters Kang-ho, the father of a child who exudes masculinity in a disorganized manner. Kang-ho goes into the house with only his son with a nervous face. After that, I thought that the child might be being abused. I can't sleep. The relationship between the two, which bega...