YOU SAID:

if you kill all the killers in the world there still will be a killer left

INTO JAPANESE

あなたが世界のすべての殺人者を殺すならば、まだ殺人者が残っています

BACK INTO ENGLISH

If you kill all the killers in the world, there are still killers left

INTO JAPANESE

あなたが世界のすべての殺人者を殺すなら、まだ殺人者が残っている

BACK INTO ENGLISH

If you kill all the killers in the world, there are still killers left