WWII POW mystery unravels 30 years after prisoner's death. Some stories are never meant to be kept secret.

Hitomi and I watched this on NHK (Japan TV). This article doesn't do the story justice. I pray this becomes a movie some day.

A son stumbles across a stack of letters in his deceased father's 'war chest' and since he knew nothing of his father's war experiences, he decided to run this mystery to ground, which would take him to the address on the envelope....in Japan. When he got to Japan the mystery was easily solved, as one of the poems sent in gratitude (some 30+ years prior) was etched in granite at the family's burial plot. The Japanese family was just as puzzled by this inscription in a foreign language (English) and everything had finally come full circle.
The Englishman was a POW and the Japanese man was one of his jailors. But instead of a story of brutality, this was a (rare) story of friendship. This prison guard risked almost certain execution by his own countrymen if they discovered that he was secretly passing along his own food to the prisoners and spent his miniscule military allowance to purchase food for them as well. As best I can tell, neither of the war veterans shared any of their wartime experiences with their families after the war. There friendship continued for decades after the end of the war.

http://sacratomatovillepost.com/2015/08/22/families-of-british-prisoner-and-japanese-guard-united-by-poem-70-years-on/