YOU SAID:

I do have one piece of serious business that doesn't include your name.

INTO JAPANESE

私はあなたの名前が含まれていない深刻なビジネスの一つがあります。

BACK INTO ENGLISH

I have one of serious business that your name does not contain.

INTO JAPANESE

私はあなたの名前が含まれていない深刻なビジネスの一つを持っています。

BACK INTO ENGLISH

I have one of serious business that your name does not contain.