MapleStory: Justice! (Prediction)

More speculation, In the recent extractions there were Thief Only weapons:

 Weapon

 Staff

Staff - Thieves only
Weapon Attack: +1
Slow(8)
0 slots

 2H Sword

2H Sword - Thieves only
Weapon Attack: +1
Normal(6)
0 slots

 Spear

Spear - Thieves only
Weapon Attack: +1
Normal(6)
0 slots

 Bow

Bow - Thieves only
Weapon Attack: +1
Knockback: +75%
Normal(6)
0 slots

and Shakar96 posted this on his blog:

So i'm guessing that the Thief hero uses multiple weapons to fight. A "Weaponmaster" class would be really awesome i think