YOU SAID:

"We'll have to be discreet when entering the mansion."

INTO JAPANESE

「屋敷に入るときは慎重にならなければなりません。」

BACK INTO ENGLISH

"You must be careful when entering the mansion."

INTO JAPANESE

「屋敷に入るときは気をつけてください。」

BACK INTO ENGLISH

"Please be careful when entering the mansion."

INTO JAPANESE

「屋敷に入るときは注意してください。」

BACK INTO ENGLISH

"Please be careful when entering the mansion."