I love the manga, so certainly I love the Drama, too.
The story is simple but i like it.
I really understand people who say the story is boring. Don't expect any major twists and turns. But it's still a story that makes you a little excited to see when what you want will happen.

I like the acting performance of all the actors. You can see how they strive and how they think about the implementation.

The Drama is a nice adaptation from the manga und worth to see, including the OST :-)