I went into this expecting the worst. I had the impression that the acting and story was basically awful. And that the side couple was the only thing worth even considering watching for.
And while i agree that the side couple does have the most convincing chemistry in general, I enjoyed a lot or even most of the scenes with the main characters. And I thought the "rich kid/body guard" dynamic mostly worked for me.

So if you, like me, have reached the bottom of the BL barrel, and you're considering giving this a shot. Then I think you should! (Just keep your expectations low.)