YOU SAID:

i mean it is in Japanese so you know

INTO JAPANESE

日本語なのでご存知でしょう

BACK INTO ENGLISH

You know it because it's Japanese

INTO JAPANESE

日本人だから知ってるよ

BACK INTO ENGLISH

I know because I'm Japanese

INTO JAPANESE

私は日本人なので知っています

BACK INTO ENGLISH

I know because i am Japanese

INTO JAPANESE

私は日本人なので知っています

BACK INTO ENGLISH

I know because i am Japanese