YOU SAID:

We walked through the door. There was someone selling mochi

INTO JAPANESE

私たちはドアを通り抜けた。餅を売っている人がいました

BACK INTO ENGLISH

We went through the door. There was a person selling rice cakes

INTO JAPANESE

私たちはドアを通り抜けました。お餅を売っている人がいました

BACK INTO ENGLISH

We went through the door. There was a person selling rice cakes