Beneath the chill of the open sky, he catches the gaze of a striking woman with raven-black hair. He tries to approach her, but she disappears before a word is spoken. Sitting on a park bench, he watches a mother, likely with her kindergarten-aged child. With each cold breath, memories of his own mother surface—memories of how she, ever so gentle, had an affair and left. As dusk settles, he finds himself in a brothel, indulging in the company of the same woman he encountered earlier that day.
basing on the uploader comment for the summary and tag im guessing MC thought he had sex with a woman he met earlier at the brothel but she was actually his mother who abandoned him.