YOU SAID:

Hello my name is Christopher, i am 12 years old.

INTO JAPANESE

こんにちは私の名前はChristopher、私は12歳です。

BACK INTO ENGLISH

Hello my name is Christopher, I am 12 years old.

INTO JAPANESE

こんにちは私の名前はChristopherです、私は12歳です。

BACK INTO ENGLISH

Hello my name is Christopher, I am 12 years old.