The Guy Next Door (Gunzo)

Heartless handsome man 'Choi Jeong-Won' X Dissolute trash man 'Baek Seon-Woo'

Choi Jeong-Won, who has returned to school, has trouble sleeping every night because of the moaning sound from his neighbor. Unable to bear it any longer, he goes to the house next door where a different man comes and goes every day to confront him... he finds out that the source of the moaning sound is Baek Seon-Woo, whom he loved in high school. Disappointed to see Jeong-Won living the same dissolute life as before, Seon-Woo keeps approaching Jeong-Won, who tries to avoid him...

Will the two be able to reach each other's true feelings?

(Source: Mr.Blue, translated)