YOU SAID:

Tomorrow at school I will sneak attack my friend.

INTO JAPANESE

明日学校で友達を急襲します。

BACK INTO ENGLISH

I will raid my friends at school tomorrow.

INTO JAPANESE

明日学校で友達を襲います。

BACK INTO ENGLISH

I'm going to hit my friend at school tomorrow.

INTO JAPANESE

明日学校で友達を殴るつもりです。

BACK INTO ENGLISH

I'm going to hit my friend at school tomorrow.