YOU SAID:

Hey! Im grace and ill be your mentor for this years games

INTO JAPANESE

おい！今年のゲームの指導者は私です。

BACK INTO ENGLISH

Hey! I am the instructor for this year's game.

INTO JAPANESE

おい！今年の試合の講師は私です。

BACK INTO ENGLISH

Hey! I will be the instructor for this year's match.

INTO JAPANESE

おい！今年の試合の講師を務めさせていただきます。

BACK INTO ENGLISH

Hey! I will be the instructor for this year's match.