YOU SAID:

Hallo! i am going to beat you in mario cart

INTO JAPANESE

ハロー！マリオカートであなたを倒すつもりです

BACK INTO ENGLISH

Hello! I'm going to beat you with Mario Kart

INTO JAPANESE

こんにちは！マリオカートであなたを倒すつもりです

BACK INTO ENGLISH

Hello! I'm going to beat you with Mario Kart