level: the strength accumulated by experience point (EXP), Rank : the accumulated power level of monsters, Class : the accumulation of monster rank per danger level, category : the accumulation of monster class per danger level.(can destroy a kingdom) .The higher ranks will be in the later chapters.

level 1 = 10 ( rank : 1 )

level 11 = 20 ( rank : 2 )

level 21 = 40 ( rank : 3 )

level 41 = 80 ( rank : 4 )

level 81 = 100 ( rank : 5 class 1 )

level 101 = 140 ( rank : 6 )

level 141 = 180 ( rank : 7 )

level 181 = 200 ( rank : 8 class 2 )

level 201 = 250 ( rank : 9 )

level 251 = 300 ( rank : 10 class 3 category 1 )

weapon ranks are categorized by color:

rank 1 (colorless) common

rank 2 (green) uncommon

rank 3 (blue) rear

rank 4 (purple) epic

rank 5 (red) ancient

rank 6 (gold) divine

rank 7 (black) Pandora

rank 8 ( rainbow ) god. can be giving only by a god