Recommend really good tearjerkers

I'm looking for recommendations on the best tearjerkers, please hit me with the ones that made you cry a river while watching. You know something like: 1 litre of tears, Koizora, Lion no oyatsu, etc.

Japanese and Korean drama recommendations only please.

• D.P.
• Move to Heaven
• Silent

The Red Sleeve!!! Cried for days

Padam padam. I didn't know I could cry so much, I was devastated.

Mars 
Shards of Her 
The Rose 
Into the Sunlight 
Nobody Knows 
Good Bye, My Princess 
Till the End of the Moon 
1 Litre no Namida 
4-punkan no Marigold 
Aishiteru 
Ando Lloyd - A.I. Knows Love ? 
Ashita no Yakusoku 
Ashita, Mama ga Inai 
Beautiful Life 
Beautiful Rain 
Boku no Ita Jikan 
Hajimemashite, Aishiteimasu 
Hokuto 
Kamisama Mou Sukoshi Dake 
Last Friends