Seo-Hyun, who is masturbating as usual in his trash-filled apartment, is caught in the act by Min-Jun, a cleaning service employee who has come into the house at her sister’s request...
“I really want to do it with a real person...”
“Then do you want to do it with me?”
Seo-Hyun finds himself unable to resist MinJjun, who is far more skilled at handling his body than he is with cleaning tools.(Source: MrBlue, translated)
— Description from AniList community (anilist.co).