YOU SAID:

My sister must cross the bridge for guinea pig rice and death

INTO JAPANESE

妹はモルモットご飯と死のために橋を渡らなければならない

BACK INTO ENGLISH

My sister has to cross the bridge for guinea pig rice and death

INTO JAPANESE

妹はモルモットご飯と死のために橋を渡らなければなりません

BACK INTO ENGLISH

My sister has to cross the bridge for guinea pig rice and death