YOU SAID:

I went to write a book where character gets turned into a monster and then killed

INTO JAPANESE

私は登場人物が怪物に変身して殺される本を書こうとした

BACK INTO ENGLISH

I tried to write a book in which characters were transformed into monsters and killed.

INTO JAPANESE

登場人物がモンスターに変身して殺される本を書こうとしました。

BACK INTO ENGLISH

I tried to write a book where characters turn into monsters and get killed.

INTO JAPANESE

登場人物がモンスターに変身して殺される本を書こうとしました。

BACK INTO ENGLISH

I tried to write a book where characters turn into monsters and get killed.