So, Here I Would Explain The Realms And Stuff,As Beginning From The Second Chapter Of The Novel,If You Don't Know This, Things Are Going To Get A Bit Confusing.

First, Adventurer Ranks.

D Rank Army General Level

C Rank Elite Soldier Level

B Rank Special Forces Level

A Rank Monarch Level

S Rank King Level

SS Rank Demi-God Level

Z Rank God Level

And As You All Should Know,Satoru Mitsushi Is Z Rank,Though He Won't Be Known As Such.

Second,Realms

Expert Can Slice A Chair With Bare Hands

Professional Can Slice Metal With Bare Hands

Master Can Slice A Boulder With Bare Hands

Peak Can Slice Stacks Of Boulders With Bare Hands

God Can Obliterate Entire Kingdoms With Bare Hands

Realms = Ranks

Expert = C Rank And D Rank

Professional = B Rank And A Rank

Master = S Rank

Peak = SS Rank

God = Z Rank