YOU SAID:
I only have a secret thing.
INTO JAPANESE
私には秘密のものしかありません。
BACK INTO ENGLISH
I have only secrets.
INTO JAPANESE
私には秘密しかありません。
BACK INTO ENGLISH
I have only a secret.
INTO JAPANESE
私には秘密しかありません。
BACK INTO ENGLISH
I have only a secret.
That didn't even make that much sense in English.