Fire in the Whole

Hae-Seong was slowly dying in a life where he had no hope for tomorrow. He attempted to end his own meaningless life, but was brought back to his normal life by firefighter Hyeon-U. Since the rescue was successful, they shouldn't have crossed paths again, but this man seems to be more of a busybody than expected. He reappeared with a bag full of adult toys for Hae-Seong, who uses sex to cure his insomnia!

(Source: Lezhin, translated)