lemme add something..
Imu-sama or IM in roman numerals
I = 1
M = 1000
if IX = 9, then u can say IM = 999
notes: not a official roman numeral tho.. the official/correct notation of 999 is CMXCIX, but who cares.. lmao
nerona family.. not very sure if this "nerona" is based on nero caesar, or something else. but nero caesar is often interpretated as 666
so... nerona imu can have literal meaning as "666 999" or "999 666"