YOU SAID:

My sister's boyfriend listens to Old Town Road just for fun.

INTO JAPANESE

私の姉の彼氏はただの楽しみのためにOld Town Roadを聞いています。

BACK INTO ENGLISH

My sister's boyfriend is listening to Old Town Road for just fun.

INTO JAPANESE

私の妹の彼氏はOld Town Roadを楽しんでいます。

BACK INTO ENGLISH

My sister's boyfriend is enjoying Old Town Road.

INTO JAPANESE

姉の彼氏はOld Town Roadを楽しんでいます。

BACK INTO ENGLISH

My sister's boyfriend is enjoying Old Town Road.