These are stat points
Those who have read upto Chapter 3 will know.
E → 0-50
D→ 50-100
C→ 100-200
B→ 200-300
A→300-500
AA→500-1000
S→ 1000- 100,000
SS→100,000 -
Nobility ranks
Emperor
Crown prince and princess
Grand Duke
Duke
Earl
Marquise
Count
Viscount
Baron