Aside from the fact that they are both Doramas (LOL) they both deal with the "Dead" and having them to cross-over.

It both talks about somebody with a special ability that eventually found somebody "immune" to it which caused the "villain" to do everything to harm the person immune to his abilities.

Both have Japanese girl and Korean guy. Same that the other is trying to learn the other's language and they end up falling in love with each other.

Though here, the girl is the one trying to learn Korean.