Power Level

F: ordinary people.

F+: Athlete.

E-: Low level Devil - low

E : Low level Devil - middle

E+: Low level Devil - High

D-: Middle Class Devil - low

D: Middle Class Devil - middle (the MC's base strength at the start of the canon, although a bit low, but I think that's enough for the beginning of the story.)

D+: Middle Class Devil - high

C-: High Class Devil - low

C : High Class Devil - middle

C+: High Class Devil - high ( I think this will be the MC's level when using Sacred Gear, when he uses all 4 tentacles.)

B-: Ultimate Class Devil - low

B : Ultimate Class Devil - middle

B+: Ultimate Class Devil - high

A-: Maou Class - low

A : Maou Class - middle

A+: Maou Class - high

S-: God Class - low

S : God Class - middle

S+: God Class - high ( Top 10 will be at this level.)

SS : none .

SSS : Ophis , Great Red , 666