YOU SAID:

pepperoni pizzas should not exist

INTO JAPANESE

ペパロニのピザが存在する必要があります。

BACK INTO ENGLISH

You need to have pepperoni pizza.

INTO JAPANESE

ペパロニのピザを持っている必要があります。

BACK INTO ENGLISH

You must have a pepperoni pizza.

INTO JAPANESE

ペパロニのピザが必要です。

BACK INTO ENGLISH

Pepperoni pizza is required.

INTO JAPANESE

ペパロニのピザが必要です。

BACK INTO ENGLISH

Pepperoni pizza is required.