"Meow the secret boy" the K-drama or manhwa?

Well I'm one of those people who have read the manhwa/webtoon before it was adapted. The changes are drastic! The light comedy was turned into a typical Korean drama. The original Hang Jo's laid back nature (just like a typical cat) had set a calm tone to the story. Sal ah's dad never remarried and left her house. The unnecessary confusion between Bang Hook Bang never existed! All these changes made the k-drama interesting but was it fair to the original story?!