Kagerou(1969)

Kagerou

A young boy watches as an old man traps a stray dog. The kid is somewhat traumatized by the commotion, and the old man says that with wild dogs, which can turn vicious, sometimes you just have no choice. The old man turns out to be a former kamikaze pilot who hadn’t been given his final orders before the end of War. He’s now an animal control officer, and a habitual alcoholic. As time goes by, the boy starts spending more time with the control officer.