YOU SAID:

i want to explain my theory on why my dad left

INTO JAPANESE

なぜ私の父が残したのか、私の理論を説明したい

BACK INTO ENGLISH

I would like to explain my theory why my father left behind

INTO JAPANESE

なぜ私の父が残したのか私の理論を説明したい

BACK INTO ENGLISH

I would like to explain my theory why my father left behind