YOU SAID:
Nah, bro, I am of a descent unbeknownst to you.
INTO JAPANESE
いや、兄弟、私はあなたに知られていない子孫です。
BACK INTO ENGLISH
No, brother, I'm a descendant unknown to you.
INTO JAPANESE
いいえ、兄弟、私はあなたに知られていない子孫です。
BACK INTO ENGLISH
No, brother, I'm a descendant unknown to you.
You've done this before, haven't you.