What is the most moving Japanese drama?

Fourteen Year Old Mother (Mirai Koda, Haruma Miura): a fourteen year old girl gets pregnant and is strong enough to give birth.

Ren Doctor: a surgeon travels back to the Edo period and saves many lives at a time when medical equipment is lacking.

Poor Nobleman: rather than being touching, it's actually a bit of a funny one, and warms the heart all the same