I've briefly gone through your list and I would recommend:
-Tatta Hitotsu No Koi (J)- very nice romance, no comedy, no politics, no war, no evil antagonist (I am fed up of those too)
-Secret Garden (K)- it's actually a romantic comedy, but not the light type. It's definitely juicier than the usual romcom
-Autumn Concerto (Tw)- very classic romance. There's illness, but I've read you clearly about the outcome. ;)
-Scent of a Woman (K)- well, this depends a lot on what's depressing for you. I think this is a drama full of hope. Heavy stuff, but not the... lethal kind.
-Pride (J)- beautiful love story, great chemistry, very nice ending
:)