I prefer the japanese one because it isn't the closest to the anime, don't know about the manga, but I didn't like the anime that much and actually prefer this version more. the other countries' follow the anime plot a bit closer depending.. I haven't seen the kdrama but I think the thai version is probably the most toxic, maybe the chinese one too, but I only saw like 5 episodes of it
now I'm craving rice crackers.. on another note, I like how the relationships between do hee's family is very good compared to other dramas where everyone is trying to backstab the other :)
I still have almost 80 eps left to watch but at the rate I've been watching it I might finish it too soon and then miss it T_T there are moments in this drama that really make me smile! and some sad heart touching ones as well
What was that ending?? We don't see her pass or any of he aftermath??
I thought it was kinda open. but I guess it left you wondering what happened to her in the end..you could just imagine to yourself that she somehow survived, but I think she probably died
K-Drama 
2 
I haven't seen the kdrama but I think the thai version is probably the most toxic, maybe the chinese one too, but I only saw like 5 episodes of it