You are forced to go Quarrel Shooter ? 
Yes, you need to be quarrel shooter to use crossbow.
No? I took up archer and I could use crossbow without specing into it
Not need to be a Quarrel Shooter to use a crossbow…
I suggest you should learn the swap weapon attribute.
I didn’t know it could be work.
I was thought it need attribute to be able to equip. Like swordsman can’t use 2 hand sword. @_@
Swap Weapon attribute just help you swap weapon easier and quicker.
Attributes Description
[Use Crossbow] Use Crossbow
크로스보우 사용 Enabled to equip Crossbow.
[크로스보우]계열 무기가 착용 가능해집니다
So this attribute is completly useless ? o_O