Help me identify this drama

I think this is a pretty recent drama (2012->)

There is a woman/girl trapped in a mental hospital (?) and she likes this white stuffed toy ( a bear maybe). Then there's a man who visits her and always brings her a new toy. And in the end the room is filled with them. 

That was a side plot of some series...

Thank you! I've seen the drama, but couldn't remeber which one it was. :)