I think the synopsis is giving people the wrong impression. The kid is sort of a drifter and works doing odd jobs; so far he's been a bartender, moving man, and a construction worker. In Call Boy, the man took pride in his job and felt like he was doing a valuable service. In JunichI it feels like he's lost. When we meet him he looks devastated, like he's been hit by a truck. I don't know because they haven't uploaded the rest of the drama yet, but I think he might have a terminal illness or something similar... I think it was the tender way he touched the pregnant woman's belly that give's me that impression and the way that the women talk about him... at any rate, don't go into this drama expecting to see a hot guy who's mission it is to please women cuz this is not that.
Edit: I just finished watching the last two episodes and in the end this whole drama was pointless.... just like the main character.