[He was quiet for a moment, as he finished the mouthful he was eating. But he had made a promise to try and be more open and it wasn't like anything about his past was a secret. On the contrary there was so much that people back on his world knew about him already, that he never had to explain.]

Yes. [He nodded.] My father was the Prime Minister of Japan until his death at the start of the war. There was a level of formality expected from me even when I was small. [Even before the army.

Not that there hadn't been many times when he had been not formal at all as a child, he had been trouble in many ways.]