YOU SAID:

You two be careful for he is a giant monster

INTO JAPANESE

二人とも気をつけて。彼は巨大な怪物だから

BACK INTO ENGLISH

Be careful, you two. He's a giant monster.

INTO JAPANESE

二人とも気をつけて。彼は巨大な怪物です。

BACK INTO ENGLISH

Be careful both of you, he's a giant monster.

INTO JAPANESE

二人とも気をつけて。彼は巨大な怪物だから。

BACK INTO ENGLISH

Be careful both of you, he's a giant monster.