YOU SAID:

what're you gonna do when there's blood in the water?

INTO JAPANESE

水の中に血が流れ込んだらどうするつもりなの?

BACK INTO ENGLISH

What are you going to do if there's blood in the water?

INTO JAPANESE

水の中に血が入ったらどうするつもりですか。

BACK INTO ENGLISH

What are you going to do if there is blood in the water?

INTO JAPANESE

水の中に血が入っている場合、あなたは何をするつもりですか?

BACK INTO ENGLISH

What are you going to do if there is blood in the water?