F-rank: Apprentice
E-rank: Adept
D-rank: Commander
C-rank: Grandcommer
B-rank: Master
A-rank: Grandmaster
S-rank: Sovereigmaster
Ss-rank: Legend
Sss-rank: Saint
Ex-rank:Demi-God
XL-rank:God
Sword rank
Red-sss rank
Orange-ss rank
Yellow-s rank
Blue-A rank
Green-B rank
Pink-C rank
Purple-D rank
Brown-E rank
Black-F rank
You need to reach level 30 before increasing your rank to E Rank and so on