This book Power System
Notice: This ranking starts from the second vol and is not really implemented in the first.
<<Species/ Race power Rank.>>
¶ Supreme being
¶Successor
¶Archangels
¶Special rank demons
¶Ankias
¶Angels
¶Demons
¶Contractors
¶Humans
<<Supreme being rank>>
¶God/goddess
¶god/ deity
¶Observer/ messenger
<<Angel Rank>>
¶Archangels
¶Guardian Angels
¶Warrior angel
¶Resident angels
<<Demon Rank>>
¶Supreme Demon
¶Special rank Demon
¶Demon king
¶Demon lord
¶Demon
<<Humans Rank>>
¶Transcendental
¶Grade S
¶Grade A
¶Grade B
¶Grade c
¶Grade D
..... I'll add more when I get to Vol 2 explaining the contracts better.
Load failed, please RETRY
Gifts
-- Gift
received Weekly Power Status
-- Power
Ranking 
-- Power
stone