This is a really short, but cute BL story. It's a miniseries that really should have been a movie at eight episodes, each about ten minutes long. While I enjoyed Mr. Heart, the plot was not fleshed out, and I would have liked to see more in depth scenes between the two. We get a couple cutesy kisses between the male leads, and the two definitely have chemistry. I would not have complained in the slightest if this had been extended for a deeper story, and getting to know the characters themselves. Their motives and such. They gave us quick glimpses into their home lives and backstories, but it was merely that. A very short glimpse. At the length, it really should have been just a quick, cutesy miniseries. Barring that, it was a nice filler watch, and I hope for more Korean BL's in the future.

All in all, I would say give it a watch as it's short and sweet.