YOU SAID:
my aunts oldest cat is also my dad
INTO JAPANESE
私の叔母の一番上の猫は私の父親でもあります
BACK INTO ENGLISH
my aunt's eldest cat is also my dad
INTO JAPANESE
私の叔母の一番上の猫は私の父でもあります
BACK INTO ENGLISH
my aunt's eldest cat is also my dad
That's deep, man.